Thomson Scientific Announces New 2007 ASME Boiler & Pressure Vessel Code is Now Available for Pre-Order Through Techstreet

Ann Arbor, MI, April 11, 2007-- Thomson Scientific, part of The Thomson Corporation (NYSE: TOC; TSX: TOC) and leading provider of information solutions to the worldwide research and business communities, today announced that the 2007 edition of The American Society of Mechanical Engineers (ASME) Boiler & Pressure Vessel Code is now available for pre-order at Techstreet (www.techstreet.com), the one-stop source for industry codes and standards to engineering and technical professionals.

The ASME Boiler and Pressure Vessel Code (BPVC) is issued every three years, with the 2007 edition scheduled for release in July. The new edition will provide the latest safety rules and regulations for design, fabrication, maintenance and inspection of all types of vessels and nuclear power plant components, and will contain thousands of pages of updated code, standards, examples and figures. The 2007 edition is available via subscription or single-document delivery.

With a Techstreet Subscription, engineers can add ASME referenced codes, plus standards from API, ASTM and others,. said Gary Smith, vice president and general manager, Techstreet. .This standardized construction code is a critical reference for power engineers, regulators, inspectors, insurers and municipal authorities worldwide..

Now for the first time, ASME is allowing Adobe Acrobat PDF files to meet stamp-holder certification requirements. Electronic PDF format allows for quick full text searching, offline viewing and print-on-demand functionality. Techstreet Subscription customers can serve multiple users with electronic PDF files in a total workflow solution that includes codes and standards from other publishers, project management tools, update alerts, and real-time usage reports . all for one flat fee. Customers who pre-order the ASME BPVC from Techstreet before July 1, 2007 will get special discounts and low introductory prices in either the PDF or print format.

For more information on the 2007 Boiler & Pressure Vessel Code, please visit www.techstreet.com/BPV2007.tmpl.

Techstreet uses Web-based technologies to speed delivery of industry codes and standards to engineers and technical professionals worldwide. Documents are easy to locate in a freely searchable online database, and are available for purchase in single-copy format or multi-user, Web-based subscription at www.techstreet.com.

About The Thomson Corporation
The Thomson Corporation ( www.thomson.com ), with 2005 revenues of approximately $8.40 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 e-learning and assessment, scientific research and healthcare. With operational headquarters in Stamford, Conn., Thomson has approximately 40,500 employees and provides services in approximately 130 countries. The Corporation's common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; TSX: TOC).

Thomson Scientific is a business of The Thomson Corporation. Its information solutions assist professionals at every stage of research and development-from discovery to analysis to product development and distribution. Thomson scientific information solutions can be found at www.scientific.thomson.com.