Stebbins, G. Ledyard Processes of organic evolution [by] G. Ledyard Stebbins. - Englewood Cliffs, N.J. Prentice-Hall [1966] - xii, 191 p. illus., maps. 23 cm. - Concepts of modern biology series . Bibliography: p. 181-182. LCCN: 66016917 //r922 Subjects--Topical Terms: Evolution Biology LC Class. No.: QH366 / .S82 Dewey Class. No.: 575