Collection and transportation of solid urban waste and its relationship with the payment of the service in the city of Puno. C&T Riqchary Revista de investigación en ciencia y tecnología, [S. l.], v. 2, n. 1, p. 37–40, 2020. Disponível em: http://revistas.unamba.edu.pe/index.php/riqchary/article/view/50.. Acesso em: 10 sep. 2025.