TY  - RPRT
TI  - Methods and Sources of Data Used to Develop Selected Water-Quality Indicators for Streams and Ground Water for the 2007 Edition of The State of the Nation's Ecosystems Report with Comparisons to the 2002 Edition
AU  - John T. Wilson
AU  - Nancy T. Baker
AU  - Michael J. Moran
AU  - Charles G. Crawford
AU  - Lisa H. Nowell
AU  - Patricia L. Toccalino
AU  - William G. Wilber
PY  - 2008
DO  - 10.3133/ofr20081110
UR  - https://pubs.usgs.gov/publication/ofr20081110
ID  - ofr20081110
ER  -