TY  - RPRT
TI  - National geochemical data base: National uranium resource evaluation data for the conterminous United States
AU  - J. D. Hoffman
AU  - Kim P. Buttleman
AU  - Russell A. MAPPER display software by Ambroziak
AU  - Christine A. MAPPER documentation by Cook
PY  - 1994
DO  - 10.3133/ds18a
UR  - https://pubs.usgs.gov/publication/ds18A
ID  - ds18A
ER  -