Chem sources-U.S.A..

Annual. Comprehensive guide to common and rare chemical products of chemical industries of the United States. Over 650 companies contributed data for the 15th ed., 1974. Arranged alphabetically by chemicals. Entries consist of chemical and codes of producing companies. Includes Applications section (according to uses of chemical products, e.g., abrasives, fertilizers, or pharmaceuticals). Alphabetical index of companies with brief identifying and sales information.