TY  - RPRT
TI  - Contributions to geophysics, 1941. Superposition in the interpretation of two-layer earth-resistivity curves
AU  - Irwin Roman
PY  - 1941
DO  - 10.3133/b927a
UR  - https://pubs.usgs.gov/publication/b927A
ID  - b927A
ER  -