Article
平時應用的種種防毒面具 - Various gas masks applied in ordinary life

Column title: 常識 - Common Knowledge
Subject matters: 新知 - new knowledge,
Language level: Mixed

Keywords: industrial production, technology, chemistry, workers,

Persons:
汪美先 Wang Meixian (Author)

Image
[No caption] -

Subject matters: Still life,
Medium: Photograph-Monochrome

Function: Related to Article/Ad

Additional information:
image on the left

Keywords: war, technology,

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[No caption] -

Subject matters: Still life,
Medium: Photograph-Monochrome

Function: Related to Article/Ad

Additional information:
image on the right

Keywords: war, technology,

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