Hearing to review the Chesapeake Bay TMDL, agricultural conservation practices, and their implications on national watersheds [electronic resource] : hearing before the Subcommittee on Conservation, Energy, and Forestry of the Committee on Agriculture, House of Representatives, One Hundred Twelfth Congress, first session, March 16, 2011.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2011.