by Max HorlickU.S. Dept. of Health and Human Services, Social Security Administration, Office of Policy, Office Research and Statistics : For sale by the Supt. of Docs., U.S. G.P.O.1980
by Max Horlick and Alfred M. SkolnikU.S. Dept. of Health, Education, and Welfare, Social Security Administration, Office of Policy, Office of Research and Statistics : for sale by the Supt. of Docs., U.S. G.P.O.1978