sponsored by the Committee on Research and Development, Gerontological Society ; [edited by] John E. O'Brien, Gordon F. Streib

U.S. Dept. of Health, Education, and Welfare, Office of Human Development, Administration of Aging : for sale by the Supt. of Docs., U.S. Govt. Print. Off. 1977 DHEW publication no. (OHD) 77-20120