2178-2679 2178-2679 S2178-26792023000100205 10.22481/praxisedu.v19i50.11996 Mexico 00 00 2023 00 00 2023 19 50

1974 1967 1975 2009 a II 2012 2017 2018 2009 b 2013 53 53 8-16 1978 2009 1974