Fortified and Unfortified Towns of the Russian Empire (1820s)

Fortified and Unfortified Towns of the Russian Empire, as depicted on the Geographical Atlas of the Russian Empire produced by the Military-Topographical Depot of His Imperial Majesty's General Staff, 1820-1827. Component of the Imperiia Project. Documentation and analysis available here (http://dighist.fas.harvard.edu/projects/imperiia/items/show/655)1820年至1827年间，由皇帝陛下总参谋部军事地形署编制的《俄罗斯帝国地理地图集》中绘录的俄罗斯帝国设防与未设防城镇。本数据集为《帝国项目》（Imperiia Project）的组成部分。相关文档与分析可参见此处：http://dighist.fas.harvard.edu/projects/imperiia/items/show/655