TY JOUR TI Assessment of social and economic competitive advantages as a tool for ensuring environmental safety of the Volga basin KW economic safety KW environmental safety KW sustainable development KW Volga basin KW competitiveness assessment KW geoparks JO The Economy under Guard AU Ivanov, A.V. PY 2020 IS 2020 PB Nizhny Novgorod Academy of the Ministry of the Interior of Russia