Ogden, Sheila J., 1949-, Calculation of drug dosages : a work test. - nineth edition / by Sheila J. Ogden and Linda K. Flaherty. - Missouri : Elsevier/Mosby, 2012. - xx, 615 pages. : illustrations. some col. ; . Includes bibliographical references and index. ISBN: 9780323077538 0323310699 (paperback) : $31.89 Subjects--Topical Terms: Pharmaceutical arithmetic--Programmed instruction.Drugs--Dosage--Programmed instruction.