IDG Books,

Warner Home Video,

Discovery Channel,

Williams & Wilkins,

Bedford/St. Martin's,

IGage,

Warner Bros.,

The University,

U.S. Dept. of Health and Human Services, Public Health Service, Food and Drug Administration, Center for Drugs and Biologics ; For sale by the Supt. of Docs., U.S. G.P.O.,

Johnson Pub. Co.,

Rand McNally,