Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health). (1999). Apparatus for measuring the gas content of coal or rock core samples. U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health.
Chicago Style (17th ed.) CitationPittsburgh Research Laboratory (National Institute for Occupational Safety and Health). Apparatus for Measuring the Gas Content of Coal or Rock Core Samples. [Pittsburgh, Pa.]: U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1999.
MLA (9th ed.) CitationPittsburgh Research Laboratory (National Institute for Occupational Safety and Health). Apparatus for Measuring the Gas Content of Coal or Rock Core Samples. U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1999.