Não informado. (1948). Educational series. Florida Department of Natural Resources.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Educational Series. Tallahassee, Fla: Florida Department of Natural Resources, 1948.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Educational Series. Florida Department of Natural Resources, 1948.
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