Não informado. (1962). Education in Science. Association for Science Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Education in Science. Hatfield, Inglaterra: Association for Science Education, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Education in Science. Association for Science Education, 1962.
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