TY  - RPRT
TI  - Aerial gamma-ray, Landsat TM, and digital elevation data, Big Bend area, Texas
AU  - Joseph S. Duval
PY  - 2005
DO  - 10.3133/ofr20051371
UR  - https://pubs.usgs.gov/publication/ofr20051371
ID  - ofr20051371
ER  -