1405-3195 1405-3195 S1405-31952007000200181 Mexico Mexico 00 03 2007 00 03 2007 41 2 181 192

2003 285 1996 161-71 1983 240 2005 48-52 1985 174 119-26 2004 452 2004 14 1999 1988 408 1994 361 2001 785 2003 84 2 2 147-57 2000 75 27-38