Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health). (2002). Using propeller fans to improve ventilation in large-entry stone mines. U.S. Dept. of Health and Human Services, 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). Using Propeller Fans to Improve Ventilation in Large-entry Stone Mines. [Pittsburgh, Pa.]: U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2002.
MLA (9th ed.) CitationPittsburgh Research Laboratory (National Institute for Occupational Safety and Health). Using Propeller Fans to Improve Ventilation in Large-entry Stone Mines. U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2002.