13-32. %EA%B3%B5%EA%B3%B5%EC%B2%AD%EC%82%AC %EC%97%90%EB%84%88%EC%A7%80%ED%9A%A8%EC%9C%A8%EB%93%B1%EA%B8%89 1%EB%93%B1%EA%B8%89%EC%9D%84 %EC%9C%84%ED%95%9C %EA%B3%B5%EC%82%AC%EB%B9%84 %EC%A6%9D%EA%B0%80%EB%B6%84 %EB%B6%84%EC%84%9D