Alkaline Salt Source Essentuki No. 17 in the Caucasus

Dubelir, Dmitry.Alkaline-salt source of Essentuki No. 17 in the Caucasus / [cit.] Dr. Dmitry Dubelir;(From the lab. Prof. E. Ludwig in Vienna).- St. Petersburg: Type.Eduard Goppe, 1881. -15 s.: Tab .. -From the "Mostly of Watering and Russian Mineral Water", Zhurn.Dr. Levis, № 7, 1881.I. Ludwig, E ..Electronic Source: PB