TY - RPRT TI - EPANIH mass spectral data base : volume 1. molecular weights 30-186 AU - Heller, Stephen R AU - Milne, G W A PY - 1978 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS NSRDS 63v1 DO - 10.6028/NBS.NSRDS.63v1 ER -