Spengler, Joseph John Demographic analysis selected readings edited by Joseph J. Spengler and Otis Dudley Duncan. - Glencoe, Ill. Free Press [c1956] - xiii, 819 p. maps, diagrs., tables. 25 cm. Bibliography: p. 785-813. Bibliographical footnotes. LCCN: 56010585 /L Subjects--Topical Terms: Population--Collections. LC Class. No.: HB881 / .S66 Dewey Class. No.: 312.082