Managing agriculture and water quality : four essays on the control of large-scale nitrogen pollution /Author: Brady, Mark.
Publisher: Uppsala : Swedish University of Agricultural Sciences,
Date: 2003. This title can be found in 1 Iowa libraries.
AGNPS, Agricultural Non-Point-Source Pollution Model a watershed analysis tool /Format: microform :
Publisher: [Washington, D.C.?] : U.S. Dept. of Agriculture, Agricultural Research Service,
Date: [1987] This title can be found in 1 Iowa libraries.
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