Contents: — An introductory survey / S.W. Hawking and W. Israel — The confrontation between gravitation theory and experiment / C.M. Will — Gravitational-radiation experiments / D.H. Douglass and V.B. Braginsky — The initial value problem and the dynamical formulation of general relativity / A.E. Fischer and J.E. Marsden — Global structure of spacetimes / R. Geroch and G.T. Horowitz — The general theory of the mechanical, electromagnetic and thermodynamic properties of black holes / B. Carter — An introduction to the theory of the Kerr metric and its perturbations / S. Chandrasekhar — Black hole astrophysics / R.D. Blandford and K.S. Thorne — The big bang cosmology–enigmas and nostrums / R.H. Dicke and P.J.E. Peebles — Cosmology and the early universe / Ya B. Zelʹdovich — Anisotropic and inhomogeneous relativistic cosmologies / M.A.H. MacCallum — Singularities and time-assymetry / R. Penrose — Quantum field theory in curved spacetime / G.W. Gibbons — Quantum gravity : the new synthesis / B.S. DeWitt — The path-integral approach to quantum gravity / S.W. Hawking — Ultraviolet divergences in quantum theories of gravitation / S. Weinberg.