Water quality
Subtitle: a report of progress
Contributors: United States. Dept. of Agriculture
Publisher: U.S. Dept. of Agriculture
Published: 1993
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 14
Subjects: Water quality -- United States; Agricultural chemicals -- Environmental aspects -- United States; Water -- Purification -- United States
Notes: Shipping list no.: 93-0507-P

"July 1993"--Preface