[Center for Research on Economic Development and Great Lakes and Marine Waters Center, The University of Michigan with Harza Engineering Company] ; prepared for U.S. Agency for International Development (USAID) and Gambia River Basin Development Organisation (OMVG)
[Center for Research on Economic Development and Great Lakes and Marine Waters Center, The University of Michigan, with Harza Engineering Company] ; prepared for U.S. Agency for International Development [by William Derman ... and others]