How much has the life expectancy of people living in the Kichi-Kemin valley been reduced due to the negative impact of the Ak-Tuz mine on the environment? ИЗВЕСТИЯ НАН [Internet]. 2024 May 16 [cited 2026 Sep. 19];(4):50-8. Available from: https://ilim.uia.gov.kg/index.php/main/article/view/555