Article
人造絲的現在及將來 - The current development of rayon and its future

Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: industrial production,

Persons:
(Author)

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Article
製造賀年卡片的新意匠 - The new design of New Year cards

Subject matters: 新知 - new knowledge,
Language level: Baihua

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