1665-3521 1665-3521 S1665-35212005000300027 Colombia Mexico Mexico México 00 00 2005 00 00 2005 18 3 27 32

[1] 2001 13 7169 [2] 2004 85 1692 [3] 1974 10 4228 [4] 2001 31 398 [5] 2001 19 495 [6] 2003 94 3675 [7] 2004 16 S3071 [8] 2002 66 153201 [9] 2000 69 1650 [10] 2003 93 2549