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American Industrial Hygiene Association Journal|January 1, 1992
Performance of laboratories measuring silica in the Proficiency Analytical Testing programS A Shulman, J H Groff, M T AbellAmerican Industrial Hygiene Association Journal|November 1, 1996
Laboratory and analytical method performance of lead measurements in paint chips, soils, and dustsP C Schlecht, J H Groff, A Feng, et al.American Industrial Hygiene Association Journal|November 28, 1997
Interlaboratory and intralaboratory variabilities in the Environmental Lead Proficiency Analytical Testing (ELPAT) ProgramP C Schlecht, R Song, J H Groff, et al.Journal of Environmental Monitoring : JEM|March 16, 2001
Comparison of three sampling and analytical methods for the determination of airborne hexavalent chromiumJ M Boiano, M E Wallace, W K Sieber, et al.Pageof 1