For citations:

Valeeva G.R., Karpov M.V. ENVIRONMENTAL QUALITY AND ITS CHANGES ESTIMATION ON THE EXAMPLE OF TATARSTAN REPUBLIC NATURAL RESERVED FOND OBJECTS. South of Russia: ecology, development. 2016;11(4):149-159. (In Russ.) https://doi.org/10.18470/1992-1098-2016-4-149-159