What is a watershed?
Edition: Rev. Apr. 1992.
Series: Program aid -- no. 420; Program aid (United States. Department of Agriculture) -- no. 420.
Publisher: U.S. Dept. of Agriculture, Soil Conservation Service
Published: 1992
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Soil conservation; Watersheds
Notes: Shipping list no.: 92-0455-P.