Κανονική προβολή Προβολή MARC Προβολή ISBD

Kelly, Valerie J.

Sources and transport of phosphorus and nitrogen during low-flow conditions in the Tualatin River, Oregon, 1991-93 / by Valerie J. Kelly, Dennis D. Lynch and Stewart A. Rounds. - [Reston, Virginia]: [U. S. Geological Survey], [U. S. Department of the Interior] [1999]. - vii, 94 p. : maps, tables ; 28 cm. - 2465 .

Prepared in cooperation with Unified Sewerage Agency of Washington County.

Includes bibliographical references (p. 74).

Subjects--Topical Terms:
Water quality--Oregon--Tualatin River
Phosphorus--Environmental aspects--Oregon--Tualatin River
Nitrogen--Environmental aspects--Oregon--Tualatin River

Dewey Class. No.: 363.738