Não informado. (1905). School science and mathematics. School Science and Mathematics Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. School Science and Mathematics. Menasha, Wis: School Science and Mathematics Association, 1905.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. School Science and Mathematics. School Science and Mathematics Association, 1905.
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