1870-5766 1870-5766 S1870-57662007000200069 Mexico 00 12 2007 00 12 2007 2 2 69 83

1962 1982 1982 1972 2004 15 207-13 1974 1996 1984 12-3 1996 1989 22-40 1981 2000 15 69-76 1986 2 1 1 139-50 1992 2003 III 3 3 48-55 2003 1999 1969 2005 5 2 2