00508nam a2200169Ia 4500 0000015537 20251012174739.0 950811s1979 us 0 eng c 0892320192 HD4904.7 Research in human capital and development a research annual edited by Ismail Sirageldin Greenwich Jai Press 1979 xiii, 258p ill 24cm. Education Economic aspects Human capital Labor economics 9904 9904