Sources and transport of phosphorus and nitrogen during low-flow conditions in the Tualatin River, Oregon, 1991-93
By: by Valerie J. Kelly, Dennis D. Lynch, and Stewart A. Rounds ; prepared in cooperation with the Unified Sewerage Agency of Washington County, Oregon
Contributors: Lynch, Dennis D; Rounds, Stewart; Washington County (Or.). Unified Sewerage Agency; Geological Survey (U.S.)
Series: U.S. Geological Survey open-file report -- 99-232
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey; Branch of Information Services [distributor]
Published: 1999
Place of publication: [Portland, Or.]; Denver, CO
Language: eng
Format: Microform
Number of pages: 111
Subjects: Water quality -- Oregon -- Tualatin River; Phosphorus -- Environmental aspects -- Oregon -- Tualatin River; Nitrogen -- Environmental aspects -- Oregon -- Tualatin River
Notes: Shipping list no.: 2002-0363-M

Includes bibliographical references (leaf 85)

Microfiche. [Denver, Colo. : U.S. Geological Survey, 2002] 2 microfiches : negative