An interdisciplinary assessment of regional-scale nonpoint ground-water vulnerability : theory and applicaiton / Richard L. Bemknopf [and others]
Series: U.S. Geological Survey.  Professional paper 1645
Publisher: Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 21
Subjects: Water - Pollution potential - United States; Agricultural chemicals - Environmental aspects - United States
Notes: 11