Renewable energy technology and the environment : proceedings of the 2nd World Renewable Energy Congress, Reading, UK, 13-18 September 1992

Energy and the environment into the 1990s proceedings of the 1st World Renewable Energy Congress, Reading, UK, 23-28 September 1990

Energy conservation in buildings the achievement of 50% energy saving--an environmental challenge? : proceedings of NORTHSUN 90, an international conference, University of Reading, UK, 18-21 September 1990