Part 1 Climate change: a comparison of three international agreements on carbon emission abatement, J. Eyckmans et al; coalitions and side payments in international CO2 treaties, S. Kverndokk; the timing of CO2 control in the face of uncertainty and learning, C.D. Kolstad; a global marketable permits approach to CO2 mitigation - implications for US energy demand, A. Rose et al; implementation issues for global tradeable carbon entitlements, T. Tietenberg. Part 2 International trade and the environment: trade and environment - a brief survey of current issues, I. de Boer; emission taxes and international market share rivalry, K. Conrad; environmental policy and trade liberalization under imperfect competition, P. Kennedy; environmental policy in a small open economy with distortionary labour taxes - a general equilibrium analysis, L. Bovenberg and R. de Mooij. Part 3 Acidification and tradeable permits: reductions of sulphur emissions in Europe - a combination of the "best available technology" concept and the "critical loads approach", M. Amann et al; improving environment through permit trading - the limits to a market approach, T. Zylicz; trading sulphur emission permits in Europe using an exchange rate, G. Klaassen; tradeable SO2 permits - guided bilateral trade in Europe, S. Kruitwagen et al; acid rain in Europe - a dynamic perspective on the use of economic incentives, K.-G. Maler.