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Dialog Launches "Kirk Othmer Encyclopedia of Chemical Technology", 4th Edition, on DVD
Desktop Access to the 27-Volume Standard Reference Work on Chemical Topics Now Available

CARY, N.C, May 14, 2001 — Dialog, a leading provider of online-based information services and a subsidiary of The Thomson Corporation (TSE:TOC), has launched a new DVD title in collaboration with John Wiley & Sons, called The Kirk Othmer Encyclopedia of Chemical Technology, 4th Edition. The edition describes the theory and practice of chemical engineering, the industrial production and uses of chemical materials, and basic subjects of chemistry. It is commonly accepted as the standard reference work on any chemical topic or industry.

The single DVD contains the full text of the entire 27-volume hard copy equivalent, including over 16,000 images, photos, and illustrations; 1,250 articles; 6,000 tables; and more than 8,300 chemical and mathematical equations. A powerful index (unique to Kirk Othmer on DVD and with almost 100,000 terms), advanced search forms, and the facility to search for common chemical properties complement the authoritative and comprehensive analysis.

Already available on CD-ROM and now on DVD, both exclusively from Dialog, the Kirk Othmer Encyclopedia of Chemical Technology, 4th Edition, offers end-users and information professionals desktop access to the 25 volumes, supplement, and index, which can be cross-referenced by the use of hypertext links. User benefits include:

• browsing across multiple volumes in seconds
• viewing and enlarging photographs, charts, graphs, figures, and tables on the screen
• printing illustrations
• cross-referencing using existing hyperlinks or by creating their own hyperlink strategies
• bookmarking, recording, and saving search strategies for future use.

"I asked our developers to produce the very best product for this industry that technology can offer us," said Sjoerd Vogt, general manager of the OnDisc division of Dialog. "I"m very pleased to say that they have succeeded."

All Dialog OnDisc® CD-ROMs are compatible with DOS, Macintosh, Windows, or Web platforms and can be loaded and accessed in a variety of ways to suit the organization or individual user. Single or multiple CD-ROMs can be used via a Web browser over an organization's intranet, using the company's Dialog@Site™ intranet software. Kirk Othmer Encyclopedia of Chemical Technology, 4th Edition on DVD, costs $9,995, or $8,995 for print subscribers.

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The Dialog Corporation
Dialog is the worldwide leader in providing online information services to organizations seeking competitive advantages in such fields as business, science, engineering, finance, and law. Its Internet and intranet-based products and services such as Dialog^®, Dialog1, Profound^®, and DataStar™ offer immediate access to over 12 terabytes, or more than six billion pages, of key information. The company has recently been named Grand Prize winner in the Database Scalability Program 2000 by the Winter Corporation for the size and breadth of its content. Headquartered in Cary, N.C., with offices around the world, Dialog has over 20,000 customers in more than 100 countries and is a subsidiary of The Thomson Corporation. For more information, contact Dialog at 1-800-3DIALOG, or on the World Wide Web at www.dialog.com.

The Thomson Corporation
The Thomson Corporation, with 2000 revenues of approximately $6.0 billion, is a leading global e-information and solutions company in the business and professional marketplace. The Corporation's common shares are listed on the Toronto and London Stock Exchanges. For more information, visit www.thomson.com.

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All designated trademarks used herein are the property of The Dialog Corporation or its subsidiaries. Registered marks are registered by The Dialog Corporation or its subsidiaries, U.S. Patent and Trademark Office. All other marks are trademarks or registered trademarks of their respective owners.

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