TY - RPRT TI - Intercomparison program for organic speciation in PM2.5 air particulate matter: description and results for trial III AU - Schantz, Michele AU - Poster, Dianne AU - Kucklick, John AU - Wise, Stephen AU - McDow, Stephen AU - Lewtas, Joellen PY - 2005 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7303 DO - 10.6028/NIST.IR.7303 ER -