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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"))
Format
Book
Remove constraint Format: Book
Topic
Mathematical models
Remove constraint Topic: Mathematical models
Topic
Employment (Economic theory)
Remove constraint Topic: Employment (Economic theory)
Topic
Labor supply
Remove constraint Topic: Labor supply
Format
Book OR Map
Remove constraint Format: Book <strong class='text-muted constraint-connector'>OR</strong> Map