00342nam a2200121Ia 4500082002300000100006400023245007000087250000900157260003000166300001400196500000500210700000500215  a338.16317bUn58.IR  aUnited Nations. Economic and Social Affairs, Department of-  aIntegrated river basin devlopment; report of a panel of expertsb  aRev.  aNew YorkbThe Auth.c1970  axvi, 80p.  a  a