National plant germplasm system hearing before the Subcommittee on Department Operations, Research and Foreign Agriculture of the Committee on Agriculture, House of Representatives, Ninety-seventh Congress, first session, June 24, 1981
United States.Congress.House.Committee on Agriculture.Subcommittee on Department Operations, Research, and Foreign Agriculture.
Washington U.S.G.P.O.
1981
Germplasm resources, Plant