Solo de Zaldívar, E. et al. 2022. Employment trajectories and economic specialization in the communes of the Ñuble Region in 1982, 1992, 2002, and 2017. Urbano. 25, 46 (Nov. 2022), 20–29. DOI:https://doi.org/10.22320/07183607.2022.25.46.02.