Corporate Author United States. Congress. House. Committee on Agriculture. Subcommittee on Department Operations, Research, and Foreign Agriculture.

標題 Review of ground water quality concerns : hearings before the Subcommittee on Department Operations, Research, and Foreign Agriculture of the Committee on Agriculture, House of Representatives, One Hundredth Congress, first and second sessions, October 12, 1987, Humboldt, IA; October 27 and December 9, 1987; March 29 and May 24, 1988.

出版資料 Washington : U.S. G.P.O : For sale by the Supt. of Docs., Congressional Sales Office, U.S. G.P.O, 1989.