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5. The survey of the low-income aged and disabled: an introduction. Tissue T. Soc Secur Bull; 1977 Feb; 40(2):3-11. PubMed ID: 139699 [Abstract] [Full Text] [Related]
8. Social security: a program and policy history. Martin PP, Weaver DA. Soc Secur Bull; 2005 Feb; 66(1):1-15. PubMed ID: 16295313 [Abstract] [Full Text] [Related]
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