1405-0471 1405-0471 S1405-04712007000100099 10.21829/myb.2007.1311238 Mexico Mexico México 00 00 2007 00 00 2007 13 1 99 117

1981 220-7 2002 169 3-14 2004 92 635-47 2004 92 266-77 1998 152 204-24 2002 90 130-40 2003 30 401-17 1997 36 487-97 1991 258 2005 250 2001 47 485-97 1998 43 40-6 1989 20 2003 177 11-6 1994 369 448 1985 31 2002 29 337-49 2003 91 41-347 2000 2nd 293-310 2005 14 395-410 2000 15 56-61 2003 299 38 2006 221 133-9 1998 105 151-7 2000 46 413-24 2005 8 1010-20 2005 93 127-37 2002 90 68-77 2002 99 6070-4 1999 22 659-82 1986 206 1996 382 765-6 2003 421 37-42 2005 65 4 4 688-93 1995 43 239-47 1984 547 2002 8 912-29 1990 36 61-79 1994 887 2006 12 686-702 1990 37 2001 411 577-81 1983 20 141-56 1975 48 1984 881-2 2002 416 389-95 2002 11-2