Yesbergen Р.A., and Aman Қ. “Problems of Intensive Development of Agriculture of Aktobe Region”. Economic series of the Bulletin of L.N. Gumilyov ENU, no. 3 (January 17, 2023): 8–18. Accessed January 21, 2026. https://bulecon.enu.kz/index.php/main/article/view/91.