Assis LF de, Vieira AS, Olivera MM. Pricing to equate environmental sanitation services, in the city of Sousa, in the State of Paraíba, Brazil. Green Journal [Internet]. 2018 Oct. 1 [cited 2024 May 12];13(4):544-56. Available from: https://www.gvaa.com.br/revista/index.php/RVADS/article/view/5446