Billups, Nerman F. American drug index / Norman F. Billups, Shirley M. Billups. - 47th edition. - St. Louis, Missouri : Wolters Kluwer Company, 2003. - xi, 1077 pages : black and white illustrations ; 21 cm., hardbound. ISBN: 15439133X Subjects--Topical Terms: Pharmacology.Pharmaceutical Preparations.Drugs. Dewey Class. No.: GR 615 B559 2003