This handbook is the product of a team effort. Jock Anderson, Howard
Barnum, John Dixon, and Jee-Peng Tan contributed to the chapters on risk
analysis, assessment of health projects, environmental externalities, and on
the assessment of education projects, respectively, with valuable input on
the latter from George Psacharopoulos. Rodrigo Archondo-Callao,
Shantayanan Devarajan, Colin A. Gannon, Pablo Guerrero, Kenneth M.
Gwilliam, Ian G. Heggie, David Hughart, Howard Jones, Ulrich Lachler, Julio
Linares, Ricardo Martin, Roberto Mosse, A. Mead Over, David A.