The labor force in economic development : a comparison of international census data, 1946-1966 / John D. Durand. Durand, John Dana. Labor supply Developing countries. HD5852 .D87 331.11 DUL Includes bibliography and index. Princeton : Princeton University Press, 1975. 1975. 1975 Text xv, 259 p. : http://www.loc.gov/catdir/enhancements/fy1504/75002988-d.html eng Developing countries.