김창길 2018-11-15T08:28:26Z 2018-11-15T08:28:26Z 1999-07 JRD21-2-04 http://repository.krei.re.kr/handle/2018.oak/15903 KREI Soil Degradation and Integrated Conservation Policies Soil Degradation and Integrated Conservation Policies KREI 논문 Kim, Changgil