Fourth Workshop on Grand Unification, University of Pennsylvania, Philadelphia, April 21-23, 1983 - Workshop on Grand Unification 1983 : University of Pennsylvania); Langacker, P; Steinhardt, P. J.; Weldon, H. A (Boston, MA. : Birkhauser, 1983)
Keywords: Grand unified theories (Nuclear physics) -- Congresses; Quantum gravity -- Congresses; Protons -- Decay -- Congresses; Magnetic monopoles -- Congresses; Cosmology -- Congresses