National Geologic Map Database
General Information
- Title: Tillage practices in the conterminous United States, 1989-2004 -- datasets aggregated by watershed
- Author(s): Baker, N.T.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Data Series DS-573
- Publication Date: 2011
- Map Scale: 1:34,680,000
- Cross Section: None
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