Geoecology of Kazakhstan: zoning, environmental status and measures for environment protection / B. N. Bakytzhanova [и др.] // European journal of Natural History. - 2016. - № 4. - С. 17-21 Доп.точки доступа: Bakytzhanova, B. N.; Kopylov, I. S.; Dal, L. I. ; Satekov, T. T.