Não informado. (1986). American Journal of Alternative Agriculture. Institute for Alternative Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. American Journal of Alternative Agriculture. Greenbelt, Md: Institute for Alternative Agriculture, 1986.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. American Journal of Alternative Agriculture. Institute for Alternative Agriculture, 1986.
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