Proceedings of the First National Conservation Conference on Natural Resources: Compilation of papers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रProceedings of the First National Conservation Conference on Natural Resources: Compilation of Papers. c1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रProceedings of the First National Conservation Conference on Natural Resources: Compilation of Papers.
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