Bibliography

Found 216 results
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Schaetzl RJ, Anderson S.  2005.  Soils: genesis and geomorphology.
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Shosteck R.  1976.  Periods of flowering of common flowers, trees and shrubs of Rock Creek Park, Washington, D.C. Unpublished flyer used at the Nature Center in Rock Creek Park.
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Southworth S.  2008.  Geology of the Chesapeake and Ohio Canal National Historical Park and Potomac River Corridor, District of Columbia, Maryland, West Virginia, and Virginia.
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