Articles 2020s 2020202120222023 2010s 2010201120122013201420152016201720182019 2000s 2000200120022003200420052006200720082009 1990s 1990199119921993199419951996199719981999 1980s 1980198119821983198419851986198719881989 1970s 1970197119721973197419751976197719781979 1960s 196019611962196319641965196719681969 1950s 19581959 Jun. Vol. 12 No. 1. 1~178File not Exists Dec. Vol. 12 No. 2. 179~283File not Exists