TY  - BOOK
AU  - Robertson,Dale M.
AU  - Weigel,Brian M.
AU  - Graczyk,David J.
TI  - Nutrient concentrations and their relations to the biotic integrity of nonwadeable rivers in Wisconsin
T2  - U. S. Geological Survey Professional paper
PY  - 2008///
CY  - Reston, Va.
PB  - U.S. Dept. of the Interior, U.S. Geological Survey
KW  - Water quality biological assessment
KW  - Wisconsin
KW  - Nutrient pollution of water
KW  - Rivers
KW  - Stream ecology
N1  - "In cooperation with the Wisconsin Department of Natural Resources", also on title page; Includes bibliogr. references : (p. 72-75)
ER  -