American drug index, 1997 / [edited by] Norman F. Billups ; associate editor, Shirley M. Billups. - 41st ed. - St. Louis, Mo. : Facts and Comparisons, c1997. - xi, 973 pages ; 21 cm Spine title: Billups American Drug Index 1997. ISBN: Subjects--Topical Terms: Drugs--Dictionaries. LC Class. No.: RS355 / B49 1997