TY  - RPRT
TI  - Airborne gamma-ray spectrometry and aeromagnetic survey of the Freer area in Duval, Live Oak, McMullen, and Webb counties, Texas
AU  - Karen A. Schulz
PY  - 1975
DO  - 10.3133/ofr75294
UR  - https://pubs.usgs.gov/publication/ofr75294
ID  - ofr75294
ER  -