2448-718X 2448-718X S2448-718X2006000100025 10.20430/ete.v73i289.552 Mexico 00 03 2006 00 03 2006 73 289 25 66

2003 2003 2001 XCI 1369-401 2003 9502 9502 1990 105 501-26 1999 3-69 2004 2002 112 419-36 2004 55 1-23 1979 1999 2001 2 2 2002 1995 2000 2004 10568 10568 1973 78 6 6 1360-80 1985 91 481-510 1994 102 5 5 912-50 1998 88 2 2 80-4 1999 114 1 1 83-116 2000 2003 2001 1997 1998 1909 2002 02138 02138 1961 1981 1990 2000 1995 1997 11 3 3 3-17 2002 2002 1986 94 5 5 1002-37 1997 87 2 2 178-83 1945 2001 64 28-60 1974 1904 2004 2005 1998