1665-8574 1665-8574 S1665-85742007000200031 Mexico 00 12 2007 00 12 2007 45 31 58

2000 17 17 219-29 1997 3 3 2000 1980 2000 22 22 Centro Coordinador y Difusor de Estudios Latinoamericanos 1984 2000 2002 80 80 2002 80 80 2002 80 80 1994 2001 8 8 2003 7 31 31 100-11 2004 59 59 155-82 2000 6-7 6-7 1988 136 136 3 2003 2.2 2.2 1988 136 136 1977 1988 123 123 1988 136 136 2003 23 23 1943 1982 1978 3 25 25 23-6 1950 2001 6 22 22 133-78 1983 1988 136 136 1994 5 1 1 21-35 1979