00361nam a2200109Ia 4500082002200000100003900022245010900061260003200170300001300202500000500215700003100220  a338.9861bV252.EF  aVanek, Jaroslav and Bilsborrow, R.  aEstimating foreign resource needs for economic development; theory method and a case study of Colombiab  aNew YorkbMcGraw-Hillc1967  ax, 180p.  a  aBilsborrow, R. ; jt. auth.