Gundersen, Alfred Families of dicotyledons. With introductory chapters by Chester A. Arnold [and others] Drawings by Maud H. Purdy. - Waltham, Mass. Chronica Botanica Co. 1950. - xvii, 237 p. illus. 23 cm. - A New series of plant science books v. 25 . Bibliography: p. [219]-228. LCCN: 51000114 Subjects--Topical Terms: Dicotyledons. LC Class. No.: QK643.D5 / G8 Dewey Class. No.: 583