1665-8574 1665-8574 S1665-85742007000100083 Mexico 00 06 2007 00 06 2007 44 83 101

1969 1980 1990 1969 9 1976 1948 1986 1963 1957 1980 1975 I 2 1979 1970 1995 33 33 142-89 1993 1984 1999 1955 4 4 4 34-60 1980