1665-4420 1665-4420 S1665-44202008000300068 Mexico 00 06 2008 00 06 2008 10 19 68 92

1961 1874 210-1 1993 2001 57 57 52-61 1974 54 54 1-47 1986 18 18 41-74 1987 1988 187-222