TY  - RPRT
TI  - Profiles of gamma-ray and magnetic data from aerial surveys over the conterminous United States
AU  - Joseph S. Duval
AU  - Frederic E. Riggle
PY  - 1999
DO  - 10.3133/ds31
UR  - https://pubs.usgs.gov/publication/ds31
ID  - ds31
ER  -