00422nam a2200169Ia 450000500170000000800410001704100140005808200230007210000170009524500340011225000110014626000420015730000120019965000150021194200090022699900170023520260814103317.0260803t1980    xx            000 0 und d  afotocopia  aBIB/05.01.01/03287  aPiaget, Jean 0aSeis estudios de psicología  a9a. ed  aBarcelona : bBarral Ediciones,c1980  a199 pb  aPSICOLOGIA  tMJCh  c16261d16261