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(((choptank OR "german branch" OR "mason branch") AND maryland) OR (mccarty OR mcconnell OR hapeman OR sutton OR wagoner OR sadeghi OR lang OR darrell) AND ((watershed OR hydro OR model OR gage) OR ((ars OR "agricultural research") AND benchmark?) OR (nrcs OR "natural resources conservation") OR "special emphasis"))
Remove constraint All Fields: (((choptank OR "german branch" OR "mason branch") AND maryland) OR (mccarty OR mcconnell OR hapeman OR sutton OR wagoner OR sadeghi OR lang OR darrell) AND ((watershed OR hydro OR model OR gage) OR ((ars OR "agricultural research") AND benchmark?) OR (nrcs OR "natural resources conservation") OR "special emphasis"))
Publish Date
1987
Remove constraint Publish Date: 1987
Topic
Economic aspects
Remove constraint Topic: Economic aspects
Topic
Mathematical models
Remove constraint Topic: Mathematical models
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