Corby, G. W. (1951). Geology and oil possibilities of the Philippines. Bureau of Print.
Chicago-viite (17. p.)Corby, Grant W. Geology and Oil Possibilities of the Philippines. Manila: Bureau of Print, 1951.
MLA-viite (9. p.)Corby, Grant W. Geology and Oil Possibilities of the Philippines. Bureau of Print, 1951.
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