Serven, Luis. Uncertainty, instability, and irreversible investment : theory, e vidence, and lessons for Africa / Luis Servâen. - Washington, D.C. : The World Bank, 1997. - 44 p. : ill. ; 28 cm. - Policy research working paper ; 1722 . Includes bibliographical references (p. 32-35). Subjects--Topical Terms: Investments ----Africa, Sub-Saharan.---- Dewey Class. No.: MISR 332.6096 SER