TY  - RPRT
TI  - Improvement of filament-protection circuitry in a Finnigan model 251 mass spectrometer
AU  - J. D. Wildman
PY  - 1986
DO  - 10.3133/ofr86484
UR  - https://pubs.usgs.gov/publication/ofr86484
ID  - ofr86484
ER  -