Le 7 pubblicazioni ordinate per anno crescente
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Dialogue
Milwaukee : Department of philosophy, Marquette University, \1956!-
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Dialogue
Bruges : Canadian philosophical association, 1962-
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Dialogue
Washington (D.C.) : International communication agency : poi U.S. information agency, 1968
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Dialogue
Washington : US Information agency, 1968-
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Dialogue
Washington : U.S. Information agency, 1968-
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Dialogue
Bologna : IAL CISL Emilia Romagna, 1991-1993
