Não informado. (1970). Annals of Mathematical Logic. Association for Symbolic Logic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annals of Mathematical Logic. Amsterdam: Association for Symbolic Logic, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annals of Mathematical Logic. Association for Symbolic Logic, 1970.
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