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wan ju yi
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Wan-ju Yi · Puksŭkʻaen
260 sayfa · 2009
Rice / History / Breeding / Technological innovations / Agricultural development projects
Singmul ŭn chigŭm to tŭtko itta
Wan-ju Yi · Tŭllyŏk
198 sayfa · 2008
Plants / Sound / Plant products / Influence of Music / Effect of music on
Sillok t'ongilbyŏ
Wan-ju Yi · Tŭllyŏk
280 sayfa · 2017
Rice / History / Breeding / Technological innovations / Agricultural development projects