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((ars OR "agricultural research") AND benchmark?) OR ("beasley lake" OR "choptank river" OR "goodwin creek" OR "leon river" OR "little river" OR "north walnut creek" OR "st. joseph river" OR "salt river" OR "mark twain" OR ("south fork" AND "iowa") OR "town brook" OR "upper big Walnut creek" OR "upper washita river" OR "yalobusha river" OR "mahantango creek" OR "goodwater creek")
Remove constraint All Fields: ((ars OR "agricultural research") AND benchmark?) OR ("beasley lake" OR "choptank river" OR "goodwin creek" OR "leon river" OR "little river" OR "north walnut creek" OR "st. joseph river" OR "salt river" OR "mark twain" OR ("south fork" AND "iowa") OR "town brook" OR "upper big Walnut creek" OR "upper washita river" OR "yalobusha river" OR "mahantango creek" OR "goodwater creek")
Publish Date
1986
Remove constraint Publish Date: 1986
Topic
Outdoor recreation
Remove constraint Topic: Outdoor recreation