Seabed hard minerals : hearing before the Subcommittee on Oceanography of the Committee on Merchant Marine and Fisheries, House of Representatives, one hundredth Congress, first session on H.R.1260 ... , June 23, 1987.
United States.Congress.House.Committee on Merchant Marine and Fisheries.Subcommittee on Oceanography.
Washington : U.S.G.P.O.,
1988.
Serial no. 100-22
Ocean mining