Ground water quality : hearings before the Subcommittee on Department Operations, Research, and Foreign Agriculture of the Committee on Agriculture, House of Representatives, one hundredth congress, first session on H.R.791, July 28, and September 16, 1987.
United States.Congress.House.Committee on Agriculture.Subcommittee on Department Operations, Research, and Foreign Agriculture.
Washington : Government Printing Office,
1988.
Serial no. 100-49
Groundwater