00285nam a2200109Ia 4500082002000000100002100020245005800041260005200099300001400151500000500165700000500170  a374.013bZ99.EE  aZymelman, Manual  aEconomic evaluation of vocational training programsb  aBaltimorebJohns Hopkins University Pressc1976  axi, 122p.  a  a