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＜図書＞
Why is welfare so hard to reform? / A staff paper by Henry J. Aaron.
(Studies in social economics)

出版者	Washington, D.C.} : {Brookings institution
出版年	{1973}
大きさ	viii, 71 p. illus. 23 cm.
著者標目	Aaron, Henry J., 1936-
件　名	Public welfare -- United States  全ての件名で検索
一般注記	Includes bibliographical references.

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