Lau, Lawrence J. Education and productivity in developing countries: an aggregate production function approach by Lawrence J. Lau, Dean T. Jamison and Frederic F. Louat - Washington, D.C. IBRD 1991 - 33p. - IBRD. Working Papers: WPS 612 . Subjects--Topical Terms: Economic DevelopmentEducation Dewey Class. No.: P L36