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	1.	Hydrography of Virginia, by N. C. Grover and R. H. Bolster. by Grover, Nathan Clifford, 1868-1956 Bolster, R. H. (Roy Hale), 1877- Series: Virginia. Geological survey. Geological series. Bulletin no. III Material type: Text; Format: print ; Literary form: Not fiction Publication details: [Richmond, Va.] Pub. by Board of agriculture and immigration, 1906 Availability: No items available. Add to cart (remove)
	2.	The Potomac River basin; geographic history--rainfall and stream flow--pollution, typhoid fever, and character of water--relation of soils and forest cover to quailty and quantity of surface water--effect of industrial wates of fishes. by Parker, Horatio N. (Horatio Newton), 1871-1946 Willis, Bailey, 1857-1949 Bolster, R. H. (Roy Hale), 1877- Ashe, W. W. (William Willard), 1872-1932 Marsh, Millard Caleb, 1872- Material type: Text; Format: print available online ; Literary form: Not fiction Publication details: Washington, Gov't print. off., 1907 Online resources: Click here to access online Availability: No items available. Add to cart (remove)

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