Fisher, Tadd Our overcrowded world / Todd Fisher. - New York : Parents' Magazine Press, 1971. - 256 p. : illus., map. ; 20 cm. Bibliography: p. 237-250. LCCN: 69012617 Subjects--Topical Terms: Population LC Class. No.: HB871 / .F53 1971 Dewey Class. No.: 301.3/2