United States. Bureau of Mines. (1937). Burning of coal and coke treated with small quantities of chemicals. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Burning of Coal and Coke Treated with Small Quantities of Chemicals. [Washington]: [s.n.], 1937.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Burning of Coal and Coke Treated with Small Quantities of Chemicals. [s.n.], 1937.
Warning: These citations may not always be 100% accurate.