이용선 2018-11-15T08:28:14Z 2018-11-15T08:28:14Z 1997-09 JRD20-1-06 http://repository.krei.re.kr/handle/2018.oak/15884 KREI The Effects of Research and Extension Activities on the Agricultural Technology in Postwar Japan:A Multiproduct Cost Function Approach The Effects of Research and Extension Activities on the Agricultural Technology in Postwar Japan:A Multiproduct Cost Function Approach KREI 논문 Lee, Yongsun