TY - RPRT TI - Ionization potential and appearance potential measurements, 1971-1981 AU - Levin, Rhoda D AU - Lias, Sharon G PY - 1982 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS NSRDS 71 DO - 10.6028/NBS.NSRDS.71 ER -