APA

Gronhovd G. H., . (1970). Slagging fixed bed gasification of North Dakota lignite at pressures to 400 PSIG. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior.

Chicago

Gronhovd Gordon H, . 1970. Slagging fixed bed gasification of North Dakota lignite at pressures to 400 PSIG. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior.

Harvard

Gronhovd G. H., . (1970). Slagging fixed bed gasification of North Dakota lignite at pressures to 400 PSIG. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior.

MLA

Gronhovd Gordon H, . Slagging fixed bed gasification of North Dakota lignite at pressures to 400 PSIG. [Washington, DC]: Bureau of Mines, U.S. Dep. of the Interior. 1970.