TY  - RPRT
TI  - Surficial materials in the conterminous United States
AU  - David R. Soller
AU  - Marith C. Reheis
PY  - 2004
DO  - 10.3133/ofr2003275
UR  - https://pubs.usgs.gov/publication/ofr2003275
ID  - ofr2003275
ER  -