00441nam a2200169 a 450000500170000000800410001703500190005810000250007722200110010224500440011330000100015736200270016770000320019490400150022690500130024199900170025420210219152853.0991125n 000 0 spa u aUPN01000064400 aRuano Ruano, Yolanda aPLEXOS aAportaciones de Piaget a la educacioĢn a13-16 a1995 No. 12, oct.-dic. aRuano Ruano, Amparo, coaut. aACb002211 aArticulo c62564d62564