Dyfyniad APA

Sinkankas, J. (1970). Prospecting for gemstones and minerals indal. Van Nostrand Reinhold Company.

Dyfyniad Arddull Chicago

Sinkankas, John. Prospecting for Gemstones and Minerals Indal. New York: Van Nostrand Reinhold Company, 1970.

Dyfyniad MLA

Sinkankas, John. Prospecting for Gemstones and Minerals Indal. Van Nostrand Reinhold Company, 1970.

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