Não informado. (1938). Petroleum Technology. American Institute of Mining and Metallurgical Engineers.
Lua i Stíl Chicago (17ú heag.)Não informado. Petroleum Technology. New York: American Institute of Mining and Metallurgical Engineers, 1938.
Lua MLA (8ú heag.)Não informado. Petroleum Technology. American Institute of Mining and Metallurgical Engineers, 1938.
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