Use of chemical agents in Southeast Asia since the Vietnam war hearing before the Subcommittee on Asian and Pacific Affairs of the Committee on Foreign Affairs, House of Representatives, Ninety-sixth Congress, first session, December 12, 1979
United States.Congress.House.Committee on Foreign Affairs.Subcommittee on Asian and Pacific Affairs.
Washington U.S.G.P.O.
1980
Gases, Asphyxiating and poisonous