TY  - BOOK
AU  - x, x
AU  - Benninghoven,A.
TI  - Sceonday ion mass spectrometry: x
SN  - 0471927384
U1  - 543.0873/S445 
PY  - 1990///
CY  - New York
PB  - Wiley
KW  - Mass spectrometry
N1  - Includes
ER  -