TY - RPRT TI - Guide for quality control on the qualitative and quantitative analysis of bulk asbestos samples: version 1 AU - Verkouteren, Jennifer R AU - Duewer, Daivd L PY - 1997 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 5951 DO - 10.6028/NIST.IR.5951 ER -