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Dialog to Hold Customer Update Seminars in Asia

TOKYO (March 10, 2003) — Dialog, a Thomson (TSX: TOC; NYSE: TOC) business and a leading worldwide provider of online-based information services and integrated information solutions, said today that it will hold customer update seminars in three Asian cities this month. The seminars will help Asian information professionals learn how to leverage recent product enhancements in Dialog services to help their businesses better harness information as an asset in a range of business and research pursuits.

The seminars will be held in Tokyo (March 11); Osaka, Japan (March 14) and in Shanghai, China (March 17).

Dialog information specialists will give in-depth presentations focused on intellectual property research, highlighting Dialog's extensive portfolios of patent, trademark, copyright and Internet domain name records from around the world. Other presentations will focus on pharmaceutical research and reports, and business information and news.

"We've added tremendous new information sources and have made a number of significant enhancements across many of our products and services, and we're eager to tell our many customers in Japan and China about the improvements," said Stuart Doig, Dialog vice president for Asia Pacific. "Information professionals across Asia rely on Dialog to help their companies be more successful, and we're confident that our ongoing program of improvements will be a major boost for them."

For information about attending a Dialog Update seminar, please contact us.

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About Dialog
Dialog, a pioneer in developing the technology behind electronic information retrieval, is the world leader in providing online-based information services to organizations seeking competitive advantages in such fields as business, science, engineering, finance and law.

Today, Dialog's online services — offered through the Dialog®, Dialog Profound®, Dialog DataStar™, NewsEdge and Intelligence Data brands — give users the ability to precisely retrieve data from more than 1.4 billion unique records, accessible via the Internet or through delivery to enterprise intranets. Searchable content includes articles and reports from thousands of real-time news feeds, newspapers, broadcast transcripts and trade publications, plus research reports and analyst notes providing support for financial decision-making, as well as in-depth repositories of scientific and technical data, patents, trademarks and other intellectual property data.

Corporate librarians, knowledge managers, other information professionals and end-users at business, professional and government organizations in more than 100 countries prize Dialog services for their depth and breadth of content, precision searching and speed.

Based in Cary, N.C., USA, Dialog has operations in 31 other countries worldwide. For more information about Dialog, please visit www.dialog.com. Or, please call (U.S./Canada) 800-3-DIALOG or (U.S.) 919-462-8600. Dialog's London office may be reached at (44) (0) 207-940-6900.

About The Thomson Corporation
The Thomson Corporation (www.thomson.com), with 2002 revenues of US$7.8 billion, is a global leader in providing integrated information solutions to business and professional customers. Thomson provides value-added information, software tools and applications to more than 20 million users in the fields of law, tax, accounting, financial services, higher education, reference information, corporate training and assessment, scientific research and healthcare. The Corporation's common shares are listed on the Toronto and New York stock exchanges (TSX: TOC; NYSE: TOC).

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 with the U.S. Patent and Trademark Office. All other marks are trademarks or registered trademarks of their respective owners.

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