Parks, R. D. (1957). Examination and valuation of mineral property. Massachusetts: Addison-Wesley.
Dyfyniad Arddull ChicagoParks, Roland D. Examination and Valuation of Mineral Property. Massachusetts: Addison-Wesley, 1957.
Dyfyniad MLAParks, Roland D. Examination and Valuation of Mineral Property. Massachusetts: Addison-Wesley, 1957.
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