TY  - RPRT
TI  - U.S. Geological Survey magnetometer network and measurement techniques in Western U.S.A.
AU  - R.J. Mueller
AU  - M.J.S. Johnston
AU  - B.E. Smith
AU  - V. Keller
PY  - 1980
DO  - 10.3133/ofr811346
UR  - https://pubs.usgs.gov/publication/ofr811346
ID  - ofr811346
ER  -