Article
衣類污點拔除法（續） - Methods to get rid of stains on clothing (continued)

Column title: 學藝 - Learning and skills
Subject matters: 新知 - new knowledge,
Language level: Wenyan

Persons:
(Author)

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Article
中國秤之分度法 - The scale of Chinese weigh-beam

Column title: 學藝 - Learning and skills
Subject matters: 新知 - new knowledge,
Language level: Wenyan

Persons:
陳步歐 Chen Bu'ou (Author)

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