Book excerpt: The Bibliographic Guide to Technology lists materials catalogued during the past year by the New York Public Library, with additional entries from LC MARC tapes. The guide includes entries for materials covering all aspects of technology: industrial, civil, transportation, structural, hydraulic, sanitary, highway, mechanical, electrical, nuclear, mining and chemical engineering, patents and trademarks, environmental technology, building construction, aeronautics and astronautics, chemical technology, food processing and production management.