00350nam a2200109 a 450000500170000008200220001710000270003924501000006626000330016630000180019963000230021720251202164305.0  a331.11091724bPRA  aPsacharopoulos, George  aManpower issues in educational investment.ba consideration of  planning processes a techniques  aWashingtonbWorld bankc1983  a101 p.b24 cm  aManpower Education