0188-6649 0188-6649 S0188-66492006000300135 10.21555/top.v31i1.187 Mexico 00 00 2006 00 00 2006 31 135 146

1948 IV III 1982 1988 2004 27 167-85 1978 1979 2000 XXXII 96 96 59-97 2004 16 29-43 1898 1995 1940 1985 1989 2003 2005 34 285