PEÑA, Raúl de la. Cornelius P. A. Bartels. Economic aspects of regional welfare : income distribution and unemployment. Leiden : Martinus Nijhoff, 1977. 261 p. (Studies in applied regional science ; v. 9). Estudios Demográficos y Urbanos, [S. l.], v. 13, n. 01, p. 92–93, 1979. DOI: 10.24201/edu.v13i01.459. Disponível em: https://estudiosdemograficosyurbanos.colmex.mx/index.php/edu/article/view/459. Acesso em: 1 may. 2025.