MUSSAGALIYEVA, A.S.; MUSSABEKOVA, R.M. Special contingent in the development of virgin and fallow lands of Northern Kazakhstan . Bulletin of the Karaganda university History. Philosophy series, [S. l.], v. 91, n. 3, p. 63–72, 2018. Disponível em: https://ejh.buketov.edu.kz/history-philosophy-vestnik/article/view/354. Acesso em: 27 sep. 2026.