Solo de Zaldívar E, Montre-Águila V, Maturana-Miranda F. Employment trajectories and economic specialization in the communes of the Ñuble Region in 1982, 1992, 2002, and 2017. RU [Internet]. 2022 Nov. 30 [cited 2026 Oct. 16];25(46):20-9. Available from: https://revistas.ubiobio.cl/index.php/RU/article/view/4623