1665-2037 1665-2037 S1665-20372007000200309 Mexico 00 12 2007 00 12 2007 14 2 309 347

1992 1973 1975 1994 1989 1993 14 3 3 549-75 1998 1986 1905 1983 2006 261-323 2001 51 2 2 1974 1987 1986 1953 2 4 4 1945 2005 1973 22 3 3 363-95 1989 387 1983 1989