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Japan's Unit 731: A chemical, biological warfare machine

By He Keyao (chinadaily.com.cn) Updated: 2015-08-31 14:36 Comments

Japan's Unit 731: A chemical, biological warfare machine

Historical site of Unit 731's gas store house built in 1940. The main building of the house was 10-meter-deep underground. [Photo by He Keyao/chinadaily.com.cn]

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