TY - RPRT TI - A validation procedure for air sampling-analysis systems. AU - H P Shotwell AU - J C Caporossi AU - R W McCollum AU - J F Mellor PY - 1979 DO - 10.1080/15298667991430235 UR - https://pubmed.ncbi.nlm.nih.gov/495478/ ID - 495478 ER -