TY - RPRT TI - EPANIH mass spectral data base : supplement 2, 1983 AU - Heller, Stephen R AU - Milne, G W A AU - Gevantman, L H PY - 1980 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS NSRDS 63supp2 DO - 10.6028/NBS.NSRDS.63supp2 ER -