1665-8027 1665-8027 S1665-80272004000200131 10.29043/liminar.v2i2.161 Mexico 00 12 2004 00 12 2004 2 2 131 142 1992 1958 XXXI 1 1 19-33 1991 1-29 1976 1953 I 1969 1987 1991 30-79 1984 1977 1983 1966 1966 1996 21-68 1995 1994 1977 XXVIII