00290nam a2200133 a 4500041000800000082001800008100001800026245002300044260003500067300001000102650001600112650001300128650001500141 aspa a338.1bA13p65 aAbel, Wilhelm aPolítica agraria aBuenos AiresbEl Ateneoc1960? a395 p aAGRICULTURA aECONOMIA aVIDA RURAL