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Theatrum Belli Ao MDCCXXXVII. L'Isle. Theatrum Belli Ao MDCCXXXVII milite Augustae Russorum Imperatricis adversus Turcas Tattarosque gesti Ex autographis in Acad Scient Petropol davidrumsey TheatrumBelliAoMDCCXXXVIIamil ca Joseph Nicolas de L'Isle Ukrainskaya liniya px Russian fortified lines Old maps of