Regional estimates of the amount of U.S. agricultural land located in watersheds with poor water quality
By: by Richard A. Smith, Gregory E. Schwarz and Richard B. Alexander
Contributors: Schwarz, Gregory E. 1954-; Alexander, Richard B; Geological Survey (U.S.)
Series: U.S. Geological Survey open-file report -- 94-399
Publisher: U.S. Geological Survey; USGS Earth Science Information Center, Open-File Reports Section, distributor]
Published: 1994
Place of publication: Reston, Va; [Denver, CO
Language: eng
Format: Microform
Subjects: Watersheds -- United States; Water quality -- United States; Nonpoint source pollution -- United States; Agricultural pollution -- United States
Notes: Distributed to depository libraries in microfiche

Shipping list no.: 95-0614-M

Microfiche. [Denver, Colo.] : U.S. Geological Survey, [1995] 1 microfiche : negative