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Economic strategies for beef cattle production applied to the Shenandoah Area of Virginia
Chiang, Ying-Chih, (1973)
The Shenandoah Valley frontier
Mitchell, Robert D., (1972)
The Great Columbia plain : a hist. geography, 1805-1910
Meinig, Donald William, (1968)
The Road to Quality Traveled by the TVA's Environmental Research Center
Radel, Robert J., (1994)