Environmental Lead Proficiency Analytical Testing (ELPAT) Program September 1999.
Feng
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HHS/PHS/CDC/NIOSH, Cincinnati, OH 45226, USA.
Schlecht
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D004391:Dust / Q000032:analysis; D004784:Environmental Monitoring / Q000592:standards*; D004785:Environmental Pollutants / Q000032:analysis*; D007854:Lead / Q000032:analysis* / Q000592:standards; D009314:National Institute for Occupational Safety and Health, U.S.; D012015:Reference Standards; D012989:Soil Pollutants / Q000032:analysis / Q000592:standards; D014481:United States
D004391:Dust; D004785:Environmental Pollutants; D012989:Soil Pollutants; D007854:Lead