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    Chuyo nongjangmul chongja saengsan mit konggŭp chʻegye kaesŏn e kwanhan yŏnʼgu /
    主要 農作物 種子 生産 및 供給 體系 改善 에 관한 研究 /
    by Yun, Ho-sŏp
    Published 1985
    ...Yŏnʼgu poso (Hanʼguk Nongchʻon Kyŏngje Yŏnʼguwŏn) ;...

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