이광원 장우환 오주환 2018-11-15T07:52:39Z 2018-11-15T07:52:39Z 1987-05 R139 http://repository.krei.re.kr/handle/2018.oak/14187 산지개발 및 이용확대방안 Mountainous Area Development and Expanded Utilization KREI 보고서 Lee, Kwangwon Jang, Woowhan