00322nam a2200133 a 4500 20210219152806.0 991125n dis 000 0 spa u 0186-8165 UPN01000061372 PRESENCIA EDUCATIVA Distrito Federal, Meéxic Irregular Revista 0 0 lcc 0 21 PP BCUPN50 BCUPN50 PP v. 2, no. 9, 1976 0 6137250 2020-12-31 00:00:00 1 REV-I 0 0 lcc 0 21 PP BCUPN50 BCUPN50 PP v. 2, no. 10, 1976 0 6137260 2020-12-31 00:00:00 1 REV-I 0 0 lcc 0 21 PP BCUPN50 BCUPN50 PP v. 2, no. 11, 1976 0 6137270 2020-12-31 00:00:00 1 REV-I 0 0 lcc 0 21 PP BCUPN50 BCUPN50 PP no. 1, 1975 0 6137210 2020-12-31 00:00:00 1 REV-I 0 0 lcc 0 21 PP BCUPN50 BCUPN50 PP no. 2, 1975 0 6137220 2020-12-31 00:00:00 1 REV-I 0 0 lcc 0 21 PP BCUPN50 BCUPN50 PP no. 3, 1975 0 6137230 2020-12-31 00:00:00 1 REV-I 0 0 lcc 0 21 PP BCUPN50 BCUPN50 PP v. 2, no. 8, 1976 0 6137240 2020-12-31 00:00:00 1 REV-I 60945 60945