1
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549
                                  -------------

                                SCHEDULE 14D-1/A

                             TENDER OFFER STATEMENT
                                (AMENDMENT NO. 2)
                                (FINAL AMENDMENT)

                          PURSUANT TO SECTION 14(d)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                                       AND
                                 SCHEDULE 13D/A
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO. 2)

                        COMPUTER LANGUAGE RESEARCH, INC.
                            (NAME OF SUBJECT COMPANY)

                             SABRE ACQUISITION, INC.
                                       AND
                             THE THOMSON CORPORATION
                                    (BIDDERS)

                          COMMON STOCK, $.01 PAR VALUE
                         (TITLE OF CLASS OF SECURITIES)

                                    20519510
                      (CUSIP NUMBER OF CLASS OF SECURITIES)
                                  -------------

                             MICHAEL S. HARRIS, ESQ.
                             THE THOMSON CORPORATION
                        METRO CENTER AT ONE STATION PLACE
                           STAMFORD, CONNECTICUT 06902
                     (NAME, ADDRESS AND TELEPHONE NUMBER OF
                      PERSON AUTHORIZED TO RECEIVE NOTICES
                    AND COMMUNICATIONS ON BEHALF OF BIDDERS)

                                    COPY TO:

                             DAVID W. HELENIAK, ESQ.
                               SHEARMAN & STERLING
                              599 LEXINGTON AVENUE
                            NEW YORK, NEW YORK 10022
                            TELEPHONE: (212) 848-4000

                                FEBRUARY 17, 1998

                                PAGE 1 OF 9 PAGES
                       AN EXHIBIT INDEX APPEARS ON PAGE 8.
   2
CUSIP No. 20519510
- --------------------------------------------------------------------------------
1.          Name of Reporting Persons

                 S.S. or I.R.S. Identification Nos. of Above Person

                 Sabre Acquisition, Inc.

- --------------------------------------------------------------------------------
2.          Check the Appropriate Box if a Member of Group
            (a)  /X/
            (b)  /_/
- --------------------------------------------------------------------------------
3.          SEC Use only

- --------------------------------------------------------------------------------
4.          Sources of Funds

            WC

- --------------------------------------------------------------------------------
5.          Check if Disclosure of Legal Proceedings is Required Pursuant to 
            Item 2(d) or 2(f) /_/

- --------------------------------------------------------------------------------
6.          Citizen or Place of Organization

            Delaware

- --------------------------------------------------------------------------------
7.          Aggregate Amount Beneficially Owned by Each Reporting Person

            14,365,891
- --------------------------------------------------------------------------------
8.          Check if the Aggregate Amount in Row (7) Excludes Certain Shares /_/
- --------------------------------------------------------------------------------
9.          Percent of Class Represented by Amount in Row (7)

            99.3%
- --------------------------------------------------------------------------------
10.         Type of Reporting Person

            CO

- --------------------------------------------------------------------------------


                                Page 2 of 9 Pages
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CUSIP No. 20519510
- --------------------------------------------------------------------------------
1.          Name of Reporting Persons

                 S.S. or I.R.S. Identification Nos. of Above Person

                 THE THOMSON CORPORATION

- --------------------------------------------------------------------------------
2.          Check the Appropriate Box if a Member of Group
            (a)  /X/
            (b)  /_/
- --------------------------------------------------------------------------------
3.          SEC Use only

- --------------------------------------------------------------------------------
4.          Sources of Funds

            WC

- --------------------------------------------------------------------------------
5.          Check if Disclosure of Legal Proceedings is Required Pursuant to 
            Item 2(d) or 2(f) /_/
- --------------------------------------------------------------------------------
6.          Citizen or Place of Organization

            Ontario, Canada

- --------------------------------------------------------------------------------
7.          Aggregate Amount Beneficially Owned by Each Reporting Person

            14,365,891
- --------------------------------------------------------------------------------
8.          Check if the Aggregate Amount in Row (7) Excludes Certain Shares /_/
- --------------------------------------------------------------------------------
9.          Percent of Class Represented by Amount in Row (7)

            99.3%
- --------------------------------------------------------------------------------
10.         Type of Reporting Person

            CO

- --------------------------------------------------------------------------------


                                Page 3 of 9 Pages
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         This Amendment No. 2 (Final Amendment) to the Tender Offer Statement on
Schedule 14D-1 and Amendment No. 2 to the Schedule 13D (the "Schedule 14D-1")
relates to the offer by Sabre Acquisition, Inc., a Delaware corporation
("Purchaser") and a wholly owned subsidiary of The Thomson Corporation, a
corporation organized under the laws of Ontario, Canada ("Parent"), to purchase
all outstanding shares of Common Stock, par value $.01 per share (the "Shares"),
of Computer Language Research, Inc., a Texas corporation (the "Company"), at a
price of $22.50 per Share, net to the seller in cash, upon the terms and subject
to the conditions set forth in Purchaser's Offer to Purchase dated January 16,
1998 (the "Offer to Purchase") and in the related Letter of Transmittal, copies
of which were attached to the Schedule 14D-1 as Exhibits (a)(1) and (a)(2)
thereto, respectively. The Schedule 14D-1 was initially filed with the
Securities and Exchange Commission on January 16, 1998.

         Capitalized terms used but not defined herein have the meanings
ascribed to such terms in the Offer to Purchase and the Schedule 14D-1.

ITEM 6.  INTEREST IN SECURITIES OF THE SUBJECT COMPANY

         Item 6 of the Schedule 14D-1 is hereby amended and supplemented to
include the following information:

         (a) and (b) At 12:00 a.m., New York City time, on Friday, February 13,
1998, the Offer expired. Based on a preliminary count, approximately 14,365,891
Shares were tendered pursuant to the Offer, of which 1,067 were tendered
pursuant to notices of guaranteed delivery. Such Shares constituted
approximately 99% of the outstanding Shares. On February 14, 1998, effective as
of 12:01 a.m., all Shares validly tendered and not withdrawn prior to the
expiration of the Offer were accepted for payment. A copy of a press release
announcing the expiration of the Offer and the acceptance of validly tendered
Shares is attached hereto as Exhibits 11 (a)(10).


                                Page 4 of 9 Pages
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ITEM 11.  MATERIAL TO BE FILED AS EXHIBITS

         Item 11 of the Schedule 14D-1 is hereby amended and supplemented by
adding the following exhibit:

         (a)(10)           Press release issued jointly by Parent and the
                           Company on February 17, 1998 announcing the
                           expiration of the Offer and acceptance for payment by
                           Parent all Shares validly tendered and not withdrawn
                           pursuant to the Offer.


                                Page 5 of 9 Pages
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         After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

                                       SABRE ACQUISITION, INC.

Dated:  February 17, 1998

                                       By  /s/  MICHAEL S. HARRIS
                                           ------------------------------------
                                           Name:  Michael S. Harris
                                           Title:  President


                                Page 6 of 9 Pages
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         After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

                                       THE THOMSON CORPORATION

Dated:  February 17, 1998

                                       By  /s/  MICHAEL S. HARRIS
                                           -------------------------------------
                                           Name:  Michael S. Harris
                                           Title:  Assistant Secretary


                                Page 7 of 9 Pages
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                                  EXHIBIT INDEX

PAGE IN SEQUENTIAL EXHIBIT NO. NUMBERING SYSTEM - ----------- ---------------- (a)(1) Form of Offer to Purchase dated January 16, 1998.................. * (a)(2) Form of Letter of Transmittal..................................... * (a)(3) Form of Notice of Guaranteed Delivery............................. * (a)(4) Form of Letter from Purchaser to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees.............. * (a)(5) Form of Letter from Brokers, Dealers, Commercial Banks, Trust Companies and Nominees to Clients........................... * (a)(6) Form of Guidelines for Certification of Taxpayer Identification Number on Substitute Form W-9...................... * (a)(7) Summary Advertisement as published in The Wall Street Journal on January 16, 1998....................................... * (a)(8) Press Release issued jointly by Parent and the Company on January 13, 1998.................................................. * (a)(9) Consolidated Financial Statements of Parent as set forth in Parent's 1996 Annual Report to Shareholders....................... * (a)(10) Press Release issued by Parent and the Company on February 17, 1998 ......................................................... 9 (c)(1) Agreement and Plan of Merger, dated as of January 12, 1998, among Parent, Purchaser and the Company..................... * (c)(2) Stock Purchaser Agreement, dated as of January 12, 1998, among Parent, Purchaser and certain Shareholders of the Company........................................................... * (c)(3) Form of Retention Agreement between the Company and M. Brian Healy....................................................... * (c)(4) Form of Retention Agreement between the Company and Francis W. Winn................................................... * (c)(5) Form of Retention Agreement between the Company and Douglas H. Gross.................................................. * (c)(6) Form of Retention Agreement between the Company and Stephen T. Winn................................................... *
- -------------- * Previously Filed Page 8 of 9 Pages
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                                                                 EXHIBIT (a)(10)

FOR IMMEDIATE RELEASE

THE THOMSON CORPORATION COMPLETES TENDER OFFER FOR COMPUTER
LANGUAGE RESEARCH, INC.

Toronto, Canada and Dallas, Texas, February 17, 1998. Research Institute of
America Group (RIAG), a division of The Thomson Corporation (TTC) today
announced that Sabre Acquisition, Inc. (Sabre, a wholly owned subsidiary of
TTC), has completed its cash tender offer for all of the outstanding shares of
common stock of Computer Language Research, Inc. (CLR). The tender offer
expired, as scheduled, at 12:00 Midnight, New York City time, on Friday,
February 13, 1998. Based on a preliminary count, 14,365,891 shares of CLR were
tendered (including 1,067 shares subject to guarantee of delivery) and
accepted for payment at a price of $22.50 (U.S.) per share.

The acceptance of these shares in the tender offer will result in TTC's
ownership of approximately 99% of the outstanding common stock of CLR.

In the proposed second step of the acquisition, TTC plans to merge Sabre with
and into CLR, with CLR as the surviving corporation of the merger. As a result
of such merger, each share of CLR common stock not previously purchased in the
tender offer will be converted into the right to receive $22.50 (U.S.) in cash.
Under applicable law, the proposed merger is not subject to the approval of the
remaining outstanding shareholders of CLR.

RIAG is a leading provider of information-based solutions for tax, accounting,
corporate finance and human resource professionals. CLR's primary business is
the provision of tax compliance software to sophisticated users within the
national/regional accounting firm and corporate tax markets. CLR also offers tax
compliance products for the bank trust and government markets, as well as
practice management and financial products for local accounting firms.

The principal activity of The Thomson Corporation is specialized information and
publishing worldwide. In addition, TTC has important interests in newspaper
publishing in North America and in leisure travel in the United Kingdom and
Sweden. TTC has sales of $7.7 billion in 1996 and some 50,000 staff members.
TTC's common shares are traded on the Toronto, Montreal and London stock
exchanges.

Contact:  John Kechejian
          The Thomson Corporation
          (203) 328-9470

          Robert Dilworth
          Computer Language Research, Inc.
          (972) 250-8679

                                PAGE 9 OF 9 PAGES