농업 부문 가상수 (virtual water) 도입 및 활용 을 위한 기초 연구 = a study on the introduction and utilization of virtual water to agriculture
Nongŏp pumun kasangsu (virtual water) toip mit hwaryong ŭl wihan kich'o yŏn'gu = a study on the introduction and utilization of virtual water to agriculture