00770 a2200253 4500 ITTG9883 OSt 20250115011954.0 241215s1986 |||||||||||||||||| #d 968-29-0592-3 ITTG ITTG spa 378.05509 L46 LEON LOPEZ, ENRIQUE G. EL INSTITUTO POLITECNICO NACIONAL : ORIGEN Y EVOLUCION HISTORICA/ ENRIQUE G. LEON LOPEZ 2 MEXICO: INSTITUTO POLITECNICO NACIONAL 1986 354 P. 21 CM. BIBLIOGRAFIA : P. 351-354. 6 1.INSTITUTO POLITECNICO NACIONAL (MEXICO) - HISTORIA. 2.EDUCACION SUPERIOR - MEXICO - HISTORIA. ddc 1 20090813 14:23:48 9650 9650 0 0 ddc 0 0 1 1 GEN 2009-08-13 0 378.05509 L46 41765 2025-01-15 07:19:54 ej.1 2025-01-15 1 0 0 ddc 0 0 1 1 GEN 2009-08-13 0 378.05509 L46 41766 2025-01-15 07:19:54 ej.2 2025-01-15 1 0 0 ddc 0 0 1 1 GEN 2009-08-13 0 378.05509 L46 41767 2025-01-15 07:19:54 ej.3 2025-01-15 1 0 0 ddc 0 0 1 1 GEN 2009-08-13 0 378.05509 L46 41768 2025-01-15 07:19:54 ej.4 2025-01-15 1 0 0 ddc 0 0 1 1 GEN 2009-08-13 0 378.05509 L46 41769 2025-01-15 07:19:54 ej.5 2025-01-15 1 0 0 ddc 0 0 1 1 GEN 2014-10-10 0 378.05509 L46 49252 2025-01-15 07:19:54 ej.6 2025-01-15 1