Não informado. (1980). Science 80. American Association for the Advancement of Science.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Science 80. Washington: American Association for the Advancement of Science, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Science 80. American Association for the Advancement of Science, 1980.
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