TY  - RPRT
TI  - Contributions of Phosphorus from Groundwater to Streams in the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces, Eastern United States
AU  - Judith M. Denver
AU  - Charles A. Cravotta
AU  - Scott W. Ator
AU  - Bruce D. Lindsey
PY  - 2011
DO  - 10.3133/sir20105176
UR  - https://pubs.usgs.gov/publication/sir20105176
ID  - sir20105176
ER  -