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Published: Boulder, CO : Westview Pr, 1978
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Published: Hamburg ; Westberlin : VSA, 1977
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Published: Berlin : Akad.-Verl, 1976
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Published: Berlin : Verl. Die Wirtschaft, 1974
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Published: Köln : Markus, 1973
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Published: Garden City, New York : Anchor Press/Doubleday, 1974
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