TY  - RPRT
TI  - Preliminary report on electromagnetic model studies
AU  - F.C. Frischknecht
AU  - G. B. Mangan
PY  - 1960
DO  - 10.3133/ofr6053
UR  - https://pubs.usgs.gov/publication/ofr6053
ID  - ofr6053
ER  -