A. N. Ogilvie on the genesis of the Yessentuck springs. In Russian (ask us if in doubt)/Ogilvi A. N. K voprosu o genezise Essentukskikh istochnikov. With three tables of maps and plans and 6 figures in the text. Series: Proceedings of the Geological Committee, New Series, Issue 98. St. Petersburg: Typography by M.M. Stasyulevich, 1914. 4, II, 119 p. SKUalbe20f926eed36b1b6.