Cleaner production as a strategy for the valorization (eco-efficiency) of the slaughterhouse, Puyo, Pastaza, Ecuador". Rev. ciente. UCSA [Internet]. 2020 Dec. 1 [cited 2026 Nov. 12];7(3):59-71. Available from: https://revista.ucsa.edu.py/ojs/index.php/ucsa/article/view/37