0185-3325 0185-3325 S0185-33252005000600027 México México México 00 12 2005 00 12 2005 28 6 27 32

1 2003 116 293-305 2 2003 30 115-8 3 2000 20 6317-25 4 1993 56 161-70 5 1998 24 100 6 2005 55 58-66 7 1954 58 109-38 8 2001 21 6889-96 9 2003 23 11054-64 10 2000 864 138-41 11 2000 26 2248 12 2000 20 8909-15 13 1998 24 93