Gunko A., Kondratyeva S. Stepkin V. Artificial caves in chalk outcrops in the Don basin. 2017 г.

Опубликовано в 2017

Gunko A., Kondratyeva S. Stepkin V. Artificial caves in chalk outcrops in the Don basin // Proceedings of International Congress of Speleology in Artificial Caves Hypogea 2017, Cappadocia, Turkey, 6/10 March 2017. – Cappadocia, 2017. – р. 554. P. 461-467.

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