00370ntaaa2200145 45000030003000000050017000030080021000200400037000410820015000781000016000932450041001092500010001502600040001606500024002000120251027201012.00714s1973 ag 01 aAR-BaBNbspacAR-BaBNeaacrdRIC a136.7 D619 aDix, G. H. aEl estudio del niño / cG. H. Dix a1 ed. aBuenos Aires : bLa Reforma, c1917 aNiño, Estudio del