Six New Files Added as Rollout of CSA Research on Dialog Continues

CARY, NC., USA (July 11, 2005)

Dialog said today that scientists, engineers and information professionals worldwide will be able to search most of the CSA files it is adding this year on a "pay-as-you-go" transactional basis, as well as through annual fixed-rate subscription.

The announcement comes as Dialog has added six new files of CSA research, part of a phased rollout of more than 30 CSA files of scientific, technical and social science research for its clients in the corporate and government markets.

The six new CSA files now available through Dialog® services on a transactional basis, as well as by subscription, are:

• Aluminium Industry Abstracts (File 33)
• Ceramic Abstracts/World Ceramics Abstracts (File 335)
• Corrosion Abstracts (File 46)
• Engineered Materials Abstracts (File 293)
• Life Sciences (File 24)
• Materials Business File (File 269)

Last month, Dialog announced the availability of three CSA files: CSA Aerospace and High Technology Database (File 108), METADEX (File 32) and CSA Technology Research Database (File 23) . The remaining CSA files will be added by the end of 2005.

Custom CSA report templates, e-Journal Links and links to related research materials are available for CSA files through DialogLink 5. Searchers can use the custom templates to quickly process their research into a desired format, such as Microsoft® Word or Microsoft® Excel, for distribution to customers, managers and others in their organization.

For more information on CSA files available through Dialog, visit our Web site at www.dialog.com.

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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, the online services provided by Dialog — offered through the Dialog®, Dialog Profound®, Dialog DataStar®, Dialog NewsEdge® and Dialog Intelliscope® 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 27 other countries. Dialog (www.dialog.com) is a business of The Thomson Corporation (NYSE: TOC; TSX: TOC). With 2004 revenues of US$8.1 billion, Thomson (www.thomson.com) is a global leader in providing integrated information solutions to business and professional customers

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

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