1. Agocs, Carol, ?Social Indicators: Selected Readings?, Annals of the American Academy of Political and Social Sciences, March 1970, pp. 127?132.
2. Census, U.S. Bureau of, School Enrollment, Series P-20, Government Printing Office, Washington, for dates indicated.
3. Census, U.S. Bureau of, Educational Attainment, Series P-20, Government Printing Office, Washington, for dates indicated.
4. Director, Selective Service System, Semiannual Report of the Director of Selective Serivice, U.S. Government Printing Office, Washington, D.C., 1971.
5. Dreeben, Robert, ?American Schooling: Patterns and Processes of Stability and Change?, in BernardBarber and AlexInkeles (eds.), Stability and Social Change, Little, Brown and Co., Boston, 1971, pp. 82?119.