tyagi o. d. a textbook of synthetic drugs [Book /] o. d.tyagi,m.yadav. - new delhi : ANMOL PUBLICATIONS PVT.LTD., 2005. - 467 p ; 22 cm. ISBN: 8170413532 Subjects--Topical Terms: Synthetic drugs. Synthetic drugs. . Dewey Class. No.: 615.31 National Library of Medicine Call No.: 615.31 / T T