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. Riqchary [Internet]. 2019 Oct. 10 [cited 2026 Nov. 15];1(1):34-4. Available from: https://revistas.unamba.edu.pe/index.php/riqchary/article/view/61