Não informado. (1926). Iowa State College journal of science. Iowa State College Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Iowa State College Journal of Science. Ames, Iowa: Iowa State College Press, 1926.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Iowa State College Journal of Science. Iowa State College Press, 1926.
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