박정근 2018-11-15T08:26:55Z 2018-11-15T08:26:55Z 1986-12 JRD09-2-08 http://repository.krei.re.kr/handle/2018.oak/15764 KREI The Sources of Productivity Growth in Korean Rice The Sources of Productivity Growth in Korean Rice KREI 논문 Park, Jungkeun