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＜図書＞
Social security programs in the United States

出版者	Washington, D.C. : U. S. Govt. Print. Off.
出版年	1966
大きさ	v, 120 p. : ill. ; 23 cm.
著者標目	United States. Social Security Administration. Office of Research and Statistics
件　名	Social security -- United States  全ての件名で検索

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