Edward, George A Text-Book of Pharmacognosy/ by George Edward; 4th ed. rev. with the assistance of H. E. Street [and] E. O'F. Walsh - 4th ed. - viii, 799 pages: ills., tables, maps 23cm First Edition, October 1934 Include an index. Subjects--Topical Terms: Pharmacognosy National Library of Medicine Call No.: QV752