Pfeiffer, John E., 1914-1999. The emergence of man [by] John E. Pfeiffer. - [1st ed.] - New York, Harper & Row [1969] - xxiii, 477 p. illus., maps, ports. 24 cm. LCCN: 71083618 LC Class. No.: GN281 .P45 1969 / .P45 1969 Dewey Class. No.: 573.2