This document on Environmental Impact Assessment and Strategic Environmental Assessment: Towards an Integrated Approach updates the earlier UNEP publication on Environmental Impact Assessment: Issues, Trends and Practice. As before, it provides a companion volume to the UNEP EIA Training Resource Manual issued in an updated and revised edition in 2002. Environmental Impact Assessment and Strategic Environmental Assessment: Towards an Integrated Approach also may be read on its own by those who want a comprehensive introduction to this subject. The main objective of this volume is to provide information and guidance on EIA and SEA good practice with particular application to developing countries and countries in transition to market economies