TY  - BOOK
AU  - Aston,Francis William
TI  - Mass spectra and isotopes
U1  - 541.2 23
PY  - 1942///, [Reprinted 1948]
CY  - London
PB  - Arnold
KW  - Isotopes
KW  - Mass spectrometry
N1  - Includes bibliographic and indexes
ER  -