0185-2620 0185-2620 S0185-26202006000200005 Mexico 00 12 2006 00 12 2006 32 5 33

1868 52 1966 62- 76 1951 1984 315-6 1968 1957 1904 1997 1966 VI 1979 1966 1878 ix 243-5 1992 18 2 2 1981 1922 1992 1990 1963