TY - RPRT TI - A method for the preparation of NIST traceable fossil fuel standards with concentrations intermediate to SRM values AU - Kelly, W Robert AU - MacDonald, Bruce S AU - Leigh, Stefan D PY - 2007 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 260-167 DO - 10.6028/NIST.SP.260-167 ER -