What is a watershed?

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245 0 0 ‡aWhat is a watershed?
250 ‡aRev. Sept. 1994, slightly rev. Feb. 1996.
260 ‡a[Washington, D.C.] : ‡bU.S. Dept. of Agriculture, Natural Resources Conservation Service, ‡c1996.
300 ‡a[4] p. : ‡bcol. ill. ; ‡c26 cm.
490 0 ‡aProgram aid ; ‡vno. 420
500 ‡aShipping list no.: 96-0186-P.
538 ‡aMode of access: Internet.
650 0 ‡aValley ecology.
650 0 ‡aWatersheds.
710 1 ‡aUnited States. ‡bNatural Resources Conservation Service
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