TY  - BOOK
AU  - Tullis,Edward Langdon
TI  - Magnetometer surveys during 1941,
T2  - South Dakota. State Geological Survey. Report of investigations,
AV  - QC825.1.U8 S84
PY  - 1942///
CY  - Vermillion, S.D.
PB  - University of South Dakota
KW  - Geomagnetism
KW  - South Dakota
KW  - Prospecting
KW  - Petroleum
KW  - Geology
N1  - At head of title: State of South Dakota, Harlan J. Bushfield, Governor. State Geological Survey, E. P. Rothrock, State Geologist; Reproduced from type-written copy; "References": p. 30
ER  -