1870-3925 1870-3925 S1870-39252018000200005 10.22198/rys.2018.72.a778 Mexico Mexico 00 08 2018 00 08 2018 30 72

1944 2 7 7 1949 1949 1949 1949 2005 2010 107-29 2010 1-20 1991 2011 2013 82 2 2 215-47 1951 1945 1945 1945 1943 1927 1926 1925 1924 1923 1923 1920 1944 1943 1943 1947 1947 1947 1947 1947 1947 1947 2011 177-94 1931 1966 2007 1936 1931 1931 1930 1920 1947 1947 1947 1945 1945 1944 2007 1927 2001 1985 2015 2012 1922 1930 2014 2012 41-58 2011 179-216 2010 355-77 2001 1925 1924 1925 1926 1922 1921 1921 1950 1950 b 1950 1950 1950 1949 1949 1949 1948 1948 1948 1947 1947 1947 1947 1947 2016 2008