1870-199X 1870-199X S1870-199X2008000400184 10.22201/fo.1870199xp.2008.12.4.15626 Mexico Mexico Mexico 00 00 2008 00 00 2008 12 4 184 191

1 Hode 2002 4 295-308 2 1997 18 214-22 3 1993 1 26-35 4 2001 72 314-23 5 1997 24 669-77 6 2003 81 1029-35 7 1998 857 232-6 8 2001 9 2 2 166 9 1993 13 113-23 10 1990 265 14432-8 11 1981 26 99-105 12 Díaz de León L 1998 111 828-34 13 2000 336 178-80 14 1991 141 15-21 15 1999 285 1236-41