TY  - BOOK
AU  - Kelly,Valerie J.
AU  - Lynch,Dennis D.
AU  - Rounds,Stewart
ED  - United States
ED  - United States.
TI  - Sources and transport of phosphorus and nitrogen during low-flow conditions in the Tualatin River, Oregon, 1991-93
U1  - 363.738 21st ed.
PY  - 1999///].
CY  - [Reston, Virginia]: 
PB  - [U. S. Geological Survey], , [U. S. Department of the Interior]
KW  - Water quality
KW  - Oregon
KW  - Tualatin River
KW  - Phosphorus
KW  - Environmental aspects
KW  - Nitrogen
N1  - Prepared in cooperation with Unified Sewerage Agency of Washington County; Includes bibliographical references (p. 74)
ER  -