Ваховский ВВ, Григорьев ВВ. CONCEPTUAL APPROACHES TO LABOR RESOURCES IMPROVEMENT AT THE REGIONAL LEVEL (BY THE EXAMPLE OF ULYANOVSK REGION). The Bulletin of the Volga Region Institute of Administration. 2012;31(2):200-205. Accessed November 8, 2026. https://volga-institute.owebs.ru/article/view/23622