Rozhko MV, Rubtzov VA, Gabdrakhmanov NK. Positioning of the Republic of Mari El in Volga Federal District. Rev. Publicando [Internet]. 2017 Dec. 12 [cited 2026 Oct. 25];4(13 (3):905-1. Available from: https://www.revistapublicando.org/revista/index.php/crv/article/view/1015