Kovalenskiy, D. I. Izvestiya Kavkazskogo otdela Imperatorskogo Russkogo Geograficheskogo Obshchestva. Tom 2-y./Kovalensky, D. I. Izvestia of the Caucasus Department of the Imperial Russian Geographical Society. Volume 2. In Russian (ask us if in doubt) - landofmagazines.com

TransliterationKovalenskiy, D. I. Izvestiya Kavkazskogo otdela Imperatorskogo Russkogo Geograficheskogo Obshchestva. Tom 2-y.

In EnglishKovalensky, D. I. Izvestia of the Caucasus Department of the Imperial Russian Geographical Society. Volume 2. In Russian (ask us if in doubt)

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