Labor-based construction and maintenance of low-volume roads - National Research Council (U.S.). Transportation Research Board; United States. Agency for International Development (Washington, D.C. : National Academy of Sciences, 1981)
"Prepared under contract AID/OTR-C-1591, project 931-1116, U.S. Agency for International Development."
Includes bibliographical references.
Keywords: Roads -- Developing countries; Labor supply -- Developing countries