"Background radiation." . . "Quasars." . . "Cosmology." . . "Astrophysique des hautes énergies." . . "Nuclear astrophysics" . . "Nuclear astrophysics." . "Conferences." . . "Particules (physique nucléaire)" . . "SCIENCE Physics Astrophysics." . . "Astrophysics." . . "Astronomie gamma." . . "astrophysique des hautes énergies [congrès]" . . "US-USSR workshop on high energy astrophysics (1989)." . . . "Rayons gamma." . . . . "High-energy astrophysics American and Soviet perspectives : proceedings from the U.S.-USSR Workshop on High-Energy Astrophysics, June 18-July 1, 1989" . "High-energy astrophysics American and Soviet perspectives : proceedings from the U.S.-USSR Workshop on High-Energy Astrophysics, June 18-July 1, 1989"@en . . . . . . . "High-energy astrophysics : american and soviet perspectives : proceedings from the U.S.-USSR Workshop on High-Energy Astrophysics, June 18-July 1, 1989" . "Electronic books"@en . . . . "Livres électroniques" . "High-energy astrophysics : American and Soviet perspectives : proceedings from the U.S.-USSR workshop on high-energy astrophysics, June 18-July 1, 1989" . . . . . . . . . . . . . . . "Conference papers and proceedings"@en . "Conference papers and proceedings" . . . "High-energy astrophysics : American and Soviet perspectives : proceedings from the U.S.-USSR Workshop on High-Energy Astrophysics, June 18-July 1, 1989" . "High-energy astrophysics, American and Soviet perspectives proceedings from the U.S.-USSR Workshop on High-Energy Astrophysics, June 18 - July 1, 1989"@en . . . . . . . . . . . . . . . . . . . . . . . . . "High energy astrophysics : American and Soviet perspectives ; proceedings from the US USSR Workshop on High Energy Astrophysics, June 18 - July 1, 1989" . . . . . . . . . . . . . . . . . . "Nuclear astrophysics Congresses." . . "Kongress." . . "Supernova 1987A." . . "Rayons X." . . "Hochenergieastronomie." . . "Galaxies." . . "Universe." . . "Astronomie X." . . "US-USSR Workshop on High-Energy Astrophysics (1991 : Moskva)" . . . "X rays." . . "Electronic books." . . "U.S.-USSR Workshop on High-Energy Astrophysics (1989 : Institute for Space Research and Abastumani Laboratory and Observatory)" . . . . .