On the declaration of objects by state monuments of nature of local importance: the decision of the Small Council of the Kaluga ...

On the declaration of objects by state monuments of nature of local importance: the decision of the Small Council of the Kaluga Regional Council of People's Deputies dated 09/17/1992 No. 168. - 1992. -605: natural environment of Russia..Source of an electronic copy: the Ministry of Culture and Tourism of the Kaluga Region