Foster, Adriance S. 1901-1973. Comparative morphology of vascular plants / by Adriance S. Foster and Ernest M. Gifford, Jr. Drawings by Evan L. Gillespie. - San Francisco : W. H. Freeman, c1959. - 555 p. : illus. ; 25 cm. - A Series of books in biology . Includes bibliography and index. Subjects--Topical Terms: Plant morphology. Dewey Class. No.: 581.4 / FOC 1959