Ansel, Howard C. Pharmaceutical Calculations / Howard C. Ansel and Mitchell J.Stoklosa. - 12th ed. - Philadelphia : Lippincott Williams & Wilkins, 2006. - xvi, 425p. : ills. Includes bibliographical references and index. ISBN: 0781762650. Subjects--Topical Terms: Pharmaceutical arithmetic.Mathematics.Drugs compounding. LC Class. No.: RS 57 ANS 2006