TY - GEN AU - Heller, Stephen R AU - Milne, G W A C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1978-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.NSRDS.63v4 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1978 TI - EPANIH mass spectral data base ::volume 4. molecular weights 381-1674 ER -