TY  - RPRT
TI  - Map Database for Surficial Materials in the Conterminous United States
AU  - David R. Soller
AU  - Marith C. Reheis
AU  - Christopher P. Garrity
AU  - D. R. Van Sistine
PY  - 2009
DO  - 10.3133/ds425
UR  - https://pubs.usgs.gov/publication/ds425
ID  - ds425
ER  -