Current situation of plastic producing companies in function of environmental preservation and conservation measures in the city of Guayaquil. Teor. Enfoques. Apl. Cienc. Soc. [Internet]. 2020 Dec. 27 [cited 2026 Jul. 24];13(27):76-82. Available from: https://revistas2.uclave.org/index.php/teacs/article/view/3051