Hodge, E. T. (1938). Preliminary report on some Northwest manganese deposits, their possible exploration and uses.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHodge, Edwin T. Preliminary Report on Some Northwest Manganese Deposits, Their Possible Exploration and Uses. Portland, 1938.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHodge, Edwin T. Preliminary Report on Some Northwest Manganese Deposits, Their Possible Exploration and Uses. 1938.
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