Ecologo-geographical peculiarities of mountain bee-keeping in the North Caucasus

по Beroev, B. M.
Опубликовано в: Fundamental and applied problems of environmental protection. Vol. 2 : International conference, September, 12-16, 1995, Tomsk : abstracts

Modern ecologic-geographical problems of the Tsei regreation region

по Beroev, B. M.
Опубликовано в: Fundamental and applied problems of environmental protection. Vol. 4 : International conference, September, 12-16, 1995, Tomsk : abstracts

To the question of use of the carst caves in the tourists excursional purposes

по Beroev, B. M.
Опубликовано в: Fundamental and applied problems of environmental protection. Vol. 4 : International conference, September, 12-16, 1995, Tomsk : abstracts