Morris, Deborah Gray. Calculate with confidence / - 5th ed. - Edinburgh : Mosby, 2009. - p. cm. ISBN: 9780323056298 (pbk.) 0323056296 (pbk.) Nat. Bib. No.: GBA969058 bnb Subjects--Topical Terms: Drugs--Dosage. Dewey Class. No.: 615.14