The Merck index : an encyclopedia of chemicals, drugs, and biologicals / Susan Budavari, editor ; Maryadele J. O'Neil, associate editor ; Ann Smith, assistant editor ; Patricia E. Heckelman, editorial assistant.

Contains 10,000 monographs of compounds, including the most significant ones that have appeared since the previous edition. "Intended to continue the tradition of serving chemists, pharmacists, physicians and others in allied professions as a handy one-volume compendium of information on the most important chemicals, drugs and biological substances, to which they can turn for quick and reliable answers to questions arising in the course of their work." Entries give chemical information, foreign patent information, references, and information as to use, cautions, and therapeutic categories, CAS numbers, as well as indexes by therapeutic category and biological activities, formulas, and cross names. 1st ed., 1889; 10th ed., 1983.