TY  - RPRT
TI  - Application of borehole geophysics to water-resources investigations
AU  - W.S. Keys
AU  - L.M. MacCary
PY  - 1971
DO  - 10.3133/twri02e1
UR  - https://pubs.usgs.gov/publication/twri02E1
ID  - twri02E1
ER  -