Valley Zelenchuk ("Old dwelling" in the Kuban): a new mountain-climatic station and countryside in the Caucasus: [with 12 photographs. photographs, plan and 2 maps: articles and materials / foreword: SI Boltenkov and others]. - Petrograd, 1917. - , VI, , 50,  p.,  f. ill., plan. ; 24 cm. - Summary in French, English and Italian.
I. Boltenkov, S.I.1. Territory (collection). 2. Karachay-Cherkess Republic: pages of history (collection). 3. Territory of Russia: Karachay-Cherkess Republic (collection). 4. Medical tourism - Caucasus North. 5. Big Zelenchuk, the river (Caucasus North).
BBC 63.3 (28-8Kub) 53 BBK 26.89 (235) 5
Electronic copy source: PB Location on the original: Don State GPB