Sirŏp kisul kyoyuk ŭi che munje / chʻaegim pʻyŏnjip Chŏng U-hyŏn ... [et al.] ; [pʻyŏnja Hanʾguk Kyoyuk Hakhoe]
實業技術敎育의諸問題 / 責任編輯鄭宇鉉 ... [et al.] ; [編者韓國教育學會]

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