Did you mean: Foster, Thelma J. 1981 International Seminar on Theoretical Physics (12th : 1981 : San Felíu de Guixols, Spain) United States Economic policy 1971-1981. United States Economic policy 1981-1993. NATO Advanced Study Institute on Mass Transport in Solids (1981 : Lannion, France) United States Foreign relations 1981- Gehman, Henry Snyder, 1888-1981. Particle Size Analysis Conference (4th : 1981 : Loughborough University of Technology) United States Politics and government 1981-1989. United States Economic conditions 1981-2001. United States Economic conditions 1971-1981 Congresses. United States Economic conditions 1971-1981. Shores, Louis, 1904-1981, Webster's beginning dictionary. 1981 Nuclear fusion. Supplement ; 1981. Hall, Brian John, 1981-