Não informado. Fishery industries. U.S. Fish and Wildlife Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Fishery Industries. Washington: U.S. Fish and Wildlife Service.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Fishery Industries. U.S. Fish and Wildlife Service.
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