Não informado. (1960). Conservationist. New York State Department of Environmental Conservation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Conservationist. Albany, NY: New York State Department of Environmental Conservation, 1960.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Conservationist. New York State Department of Environmental Conservation, 1960.
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