Descriptions of approximately 16,000 agencies, associations, institutions, publications, and services. Intended to be a comprehensive guide to public and private agencies involved with medicine in, for the most part, the United States. Includes some international organizations and foreign publications. Excludes medical equipment suppliers, testing laboratories, and special clinics. Arrangement under 36 sections, e.g., National and international associations, Poison control centers, Teaching hospitals, and Libraries and information centers. Each entry gives brief identifying information. Some sections have individual indexes.