00470ntaaa2200181 45000030003000000050017000030080021000200400037000410820017000781000019000952450029001142500010001432600049001533000010002025000030002126500023002426500023002650120251027202821.00714s1973 ag 01 aAR-BaBNbspacAR-BaBNeaacrdRIC a920.0000 H74 aHolt, Rackham aGeorge Washington Carver a1 ed. aBuenos Aires : bEditorial Poseidon, cc1944 a447 p aUna biografía americana abiografía-Carver aCarver-biografía