http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sources and transport of phosphorus and nitrogen during low-flow conditions in the Tualatin River, Oregon, 1991-93
vii, 94 pages : illustrations, maps ; 28 cm.
by Valerie J. Kelly, Dennis D. Lynch, and Stewart A. Rounds ; prepared in cooperation with Unified Sewerage Agency of Washington County.
Includes bibliographical references (page 74).
U.S. Geological Survey water-supply paper ; 2465-C