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Dialog to Spotlight Global Reach at SLA Conference

Company Highlighting Intellectual Property and Business Information & News Resources

NEW YORK, N.Y., USA (May 29, 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 showcase its enhanced collection of intellectual property information, business news and market research reports at the Special Libraries Association (SLA) Annual Conference meeting here June 7-12.

Dialog is a sponsor of the conference, designated as one of SLA's three Major Conference Partners.

"As the leading provider of specialized, high-value information services to information professionals around the world, the annual SLA conference is a premier event for us," said Cynthia Murphy, Dialog senior vice president, strategic marketing. "This year, we are particularly eager to meet with customers. We've made tremendous enhancements to a number of key products and services that underscore our global reach, and the SLA conference will be the ideal event at which to introduce them."

Specific enhancements Dialog will highlight include:

• The addition of trademark files from three Central European countries — never before available through any online vendor — to the Dialog collection of trademark data from around the world.
  
  
• New top-level, country-specific domain records from more than 100 countries added to the Dialog database of more than 95 million Internet domain records, the largest such collection available anywhere. (Country coded top-level domains are those Web addresses ending in an abbreviation for a home country, such as .nl for the Netherlands or .fr for France.)
  
  
• Additional non-English language content — including France's Le Monde newspaper and feeds from Spain's EFE news agency — now available through Dialog® NewsRoom, the fast-growing database of business news and analysis gathered from more than 7,500 global news sources.
  
  
• A new collection of highly valued market research reports added to the Dialog database of more than 200,000 market research reports, provided by leading market research firms worldwide.

Dialog also said it would preview upcoming enhancements to its intellectual property information collection, including the addition of pre-grant publications to the U.S. Patents fulltext file, a new German fulltext patent database (with integrated English-language machine translations) and daily updating of the U.S. Federal trademarks file.

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About Dialog and The Thomson Corporation
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. 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 28 other countries worldwide. Dialog (www.dialog.com) is a business of The Thomson Corporation (TSX: TOC; NYSE: TOC). With 2002 revenues of US$7.8 billion, Thomson (www.thomson.com) is a global leader in providing integrated information solutions to business and professional customers.

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

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