Analysis of the labor characteristics of civil construction workers, registered in the National Registry of Civil Construction Workers RETCC in the Puno Region 2015-2017. C&T Riqchary Science and technology research magazine, [S. l.], v. 1, n. 1, p. 34–44, 2019. DOI: 10.57166/. Disponível em: https://revistas.unamba.edu.pe/index.php/riqchary/article/view/61. Acesso em: 15 nov. 2026.