Proficiency Analytical Testing (PAT) Program. August 1999.
Feng
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Department of Health and Human Services, U.S. Public Health Service, Centers for Disease Control and Prevention, Cincinnati, OH, USA.
Schlecht
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D000395:Air Pollutants, Occupational / Q000032:analysis*; D004784:Environmental Monitoring / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D007753:Laboratories / Q000592:standards*; D008670:Metals / Q000032:analysis*; D009314:National Institute for Occupational Safety and Health, U.S.; D016273:Occupational Exposure / Q000517:prevention & control*; D012015:Reference Standards; D012997:Solvents / Q000032:analysis*; D014481:United States
D000395:Air Pollutants, Occupational; D008670:Metals; D012997:Solvents