Ch'en Ta 陳達 Ch'en Ta (1892-), sociologist and demographer, taught at Tsinghua University (1923-51) and published studies of Chinese labor, migration, and population. From 1938 to 1948 he directed the Institute of Census Research, developed a census program, and made demographic investigations of the Kunming area. After 1958, Ch'en came under Communist censure temporarily because […]