Natural gas: proceedings of a symposium held by the Exploration and Production Group of the Institute of Petroleum, London, 17 June 1966; edited by Peter Hepple. Hepple, Peter, ed. Institute of Petroleum, London. Exploration and Production Group. Natural gas Congresses. TN880.A1 N27 338.27285 INN Includes bibliographies. London, Institute of Petroleum, 1966. 1966. 1966 Text [7], 112 p. eng