This volume is a comprehensive treatment of a variety of public sector applications of OR methods. The papers are directed at bridging the gap between theory and practice, with an emphasis on a clear statement of where these methods have been used and were useful. The technical level is appropriate for the general reader, with a specific interest in either a particular subject area (military, urban services, crime and justice, health and administration, air and water quality, natural resources management, apportionment), or methodology (hazardous facility siting, voting theory and paired comparisons, competitive bidding, and theories of measurement).