307.2 Y Young, Pauline (Vislick), 1896- Scientific social surveys and research; an introduction to the background, content, methods, and analysis of social studies, with chapters on statistics, scaling techniques, graphic presentation, and human ecology by Calvin F. Schmid, and a foreword by Stuart A. Rice; 2 ed. New York, Prentice-Hall [1951, c1939]. xxviii, 621 p. retratos, tablas. 22 cm.