TY - RPRT TI - Kovats and lee retention indices determined by gas chromatography/mass spectrometry for organic compounds of environmental interest AU - Colleen E. Rostad AU - Wilfred E. Pereira PY - 2005 DO - 10.1002/jhrc.1240090603 UR - https://pubs.usgs.gov/publication/70218181 ID - 70218181 ER -