Policy, research and external affairs working paper. Policy, planning, and research working paper.
ImprintWashington, D.C. : World Bank, [1993?]-
Title history: Policy, planning, and research working paper, 198?-1991; Policy, research, and external affairs working paper, 1991-1992. Each issue has distinctive title. Issues may be published by different divisions of IBRD. Description based on: WPS 1799 (July 1997).