Demographic analysis; selected readings - Spengler, Joseph J. 1902-1991, 4 0 (Joseph John),16; Duncan, Otis Dudley; 5 (Glencoe, Ill : Free Press, 1956)
Bibliography: p. 785-813. Bibliographical footnotes.
Keywords: 2 -- 0; 6; Population. -- 20; 20; 2