TY  - RPRT
TI  - Environmental factors that influence the location of crop agriculture in the conterminous United States
AU  - Nancy T. Baker
AU  - Paul D. Capel
PY  - 2011
DO  - 10.3133/sir20115108
UR  - https://pubs.usgs.gov/publication/sir20115108
ID  - sir20115108
ER  -