00314nam a2200121 a 450000500170000000800410001703500190005810000210007722200180009824500500011630000100016636200160017620210219153230.0991125n                      000 0 spa u  aUPN01000084920  aSanchez, Ricardo  aUNIVERSIDADES  aLa Reforma de la Universidad Nacional / UDUAL  a31-33  a1994 44 (7)