Lenore E. Bixby ... [et al.]
U.S. Dept. of Health, Education, and Welfare, Social Security Administration, Office of Research and Statistics : For sale by the Supt. of Docs., U.S. G.P.O.
1975
Research report (United States. Social Security Administration. Office of Research and Statistics)
no. 45 , DHEW publication
no. (SSA) 75-11802
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