2007-4387 2007-4387 S2007-43872020000100147 10.22201/iij.24487937e.2020.14.14908 USA 00 12 2020 00 12 2020 14 147 172

1919 1999 1988 61 2012 317-44 1965 1985 95 1955 64 1986 2010 29 1997