TY  - RPRT
TI  - Methods of measuring water levels in deep wells
AU  - M. S. Garber
AU  - F. C. Koopman
PY  - 1968
DO  - 10.3133/twri08a1
UR  - https://pubs.usgs.gov/publication/twri08A1
ID  - twri08A1
ER  -