公共安全与秩序保卫部 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "公共安全与秩序保卫部" in Chinese language version.

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1books.google.com

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books.google.com

Corrin, Chris; Feihn, Terry. AQA A-level History Tsarist and Communist Russia: 1855–1964. Hachette UK; Hodder Education; Dynamic Learning. 31 July 2015: 44 [8 November 2015]. ISBN 9781471837807. In 1881 a new secret police – the Okhrana – was established.