Management systems evaluation area, Iowa - Walnut Creek watershed
Contributors: Geological Survey (U.S.)
Series: Water fact sheet; Open-file report -- 92-167.; U.S. Geological Survey open-file report -- 92-167.
Publisher: U.S. Geological Survey, Dept. of the Interior
Published: 1992
Place of publication: [Washington]
Language: eng
Format: Microform
Subjects: Water quality -- United States.; Agricultural chemicals -- Environmental aspects -- United States.
Notes: Caption title.

Distributed to depository libraries in microfiche.

Shipping list no.: 93-0957-M.

Includes bibliographical reference.

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1993] 1 microfiche : negative.