0121-1935 0121-1935 S0121-19352018000100045 10.25100/rc.v22i1.7100 Colombia 00 06 2018 00 06 2018 22 1 45 71

1 1997 2 2007 3 1989 Second Edition 4 1966 5 1968 121 31-47 6 1975 42 4 4 735-50 7 2004 8 2002 130 7 7 2139-43