00467ntaaa2200169   45000030003000000050017000030080021000200400037000410820014000781000020000922450083001122500010001952600048002053000011002536500012002647000021002760120251027201012.00714s1973  ag    01   aAR-BaBNbspacAR-BaBNeaacrdRIC  a136.7 C66  aCohen, Dorothy   aGuía para observar la conducta del escolar / cDorothy Cohen, Virginia Stern  a1 ed.  aBuenos Aires : bEditorial Paidós, c1965  a127 p.  aNiñez  aStern, Virginia