Mazhitova, Zh.S., G.T. Isakhan, and A.S. Bektursyn. 2021. “Environmental Consequences of Virgin Land Development in Kazakhstan (based on Nur-Sultan City Archive)”. Bulletin of the Karaganda University History. Philosophy Series 103 (3):55-64. https://doi.org/10.31489/2021hph3/55-64.