TY  - RPRT
TI  - Geochemical and mineralogical maps, with interpretation, for soils of the conterminous United States
AU  - David B. Smith
AU  - Federico Solano
AU  - Laurel G. Woodruff
AU  - William F. Cannon
AU  - Karl J. Ellefsen
PY  - 2019
DO  - 10.3133/sir20175118
UR  - https://pubs.usgs.gov/publication/sir20175118
ID  - sir20175118
ER  -