TY  - RPRT
TI  - Automatic rezeroing circuit for bore-hole strainmeter
AU  - R.J. Mueller
AU  - D. Myren
PY  - 1986
DO  - 10.3133/ofr86190
UR  - https://pubs.usgs.gov/publication/ofr86190
ID  - ofr86190
ER  -