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Published: Harmondsworth, Middlesex : Penguin Books, 1973
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Published: New York, NY [u.a.] : Washington Square Press, 1966
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Published: Atlanta, GA : Center for Democratic Renewal, 1992
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Published: Cambridge, Mass. : Ballinger, [1982]
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Published: Lexington, Mass [u.a.] : Heath, 1990
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Published: Chicago [u.a.] : Contemporary Books, 1987
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Published: New York : Washington Square Pr, 1970
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Published: Bonn : Scheur, [ca. 1952]
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