Geissbuhler, H. (1979). World food production enviornment-pesticides. Pergamum Press.
Chicago Style aipamenaGeissbuhler, H. World Food Production Enviornment-pesticides. New York: Pergamum Press, 1979.
MLA aipamenaGeissbuhler, H. World Food Production Enviornment-pesticides. Pergamum Press, 1979.
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