00722nam a2200241Ia 450000100060000000300050000600500170001100800410002802000150006903500200008404000130010410000350011724500810015225000110023326000400024430000250028450000110030950400260032065000390034665000280038565000380041365000290045161172BIBL20160527191205.0860528s1983    mx a          001 0 spa d  a9682414644  a(OCoLC)13650231  aTXPcTXP20aHeredia Ancona, Bertha.2Local10aManual para la elaboración de material didácticocBertha Heredia Ancona.  a1a ed.0 aMéxicobNúcleo Editorialc1987.  a176 p.bill.c23 cm.  aIndex.  aBibliography: p. 171. 0aTeachingxAids and devices.2Local 0aEducation, Higher2LEMB 0aIndividualized instruction2Local 0aOpen plan schools2Local