TY - BOOK ED - United States TI - Social security programs in the United States T2 - SSA publication PY - 1960///- CY - [Baltimore, Md.?] PB - Social Security Administration, Office of Policy, Office of Research and Statistics KW - Social security KW - United States KW - Statistics KW - Local N1 - Includes bibliographical references (p. 77-79) ER -