Smith, Robert Leo. The ecology of man an ecosystem approach. - New York Harper & Row [1972] - xii, 436 p. illus. 29 cm. 920316 Bibliography: p. 424-428. ISBN: 0060463368 LCCN: 78158545 Subjects--Topical Terms: Human ecology--Addresses, essays, lectures. LC Class. No.: GF8 / .S6 Dewey Class. No.: 301.31/08