| Table of contents Rev. P+L vol.15 no.2 Caldas July/Dec. 2020 Editorial | | | | · La metáfora como vehículo de la verdad: Lenguaje de Nietzsche Montoya Carvajal, Juan Fernando
| | | Original article | | | | · Selectivity of encircling gillnet for Lisa (Mugil Incilis), Ciénaga Grande de Santa Marta Posada, Moisés; Noriega, Laura; Altamar, Jairo
| | | | · Optimization of the sono-photo-Fenton process for wastewater treatment using a central composite design. Castrillón-Marín, Mateo; Rubio-Clemente, Ainhoa
| | | | · Cleaner production alternatives in air quality for the pottery sector, Sogamoso (Boyacá) Rocha-Gil, Biviana Esperanza; Echeverri-Rubio, Alejandro
| | | | · The biodigester bale as an organic waste treatment strategy: a bibliographic review Ossa-Carrasquilla, Laura Catalina; Correa-Ochoa, Mauricio Andrés; Múnera-Porras, Luisa María
| | | | · Risk assessment of runoff sediments in an experimental catchment in Bogotá related to hydrological and granulometric characteristics Sanabria-Morales, Jorge Alberto; Rivera-Soler, Lorena; Cabra-Soto, Andrea Del Pilar; Jiménez-Rojas, Carolina A.; Torres-Camacho, Juan Nicolas; Pimiento-Avella, María Alejandra; Duque-Pardo, Verónica; Torres, Andrés
| | | | · Environmental impacts in Colon Campus: Autonomous University of the State of México Pérez, José Isabel Juan
| | | | · Waste and resignification materials: notes of an experience from design management Henao-Santa, Juan David; Ibarra-Vargas, Sara B.
| | | | · Recycling of scrap metal generated in dental prostheses manufacturing Mosquera-Palomino, Josefina; Vélez-Gómez, Carlos Ignacio
| | | Case study | | | | · Community diagnosis for integral management of solid waste. Case study: barrio Fredonia, Cartagena Ariza-Díaz, Andrea; Sánchez-De La Torre, Valeria; Bahamón-Restrepo, Andrés; Díaz-Mendoza, Claudia; Pasqualino, Jorgelina
| | | Essay | | | | · Comparison of the enacted laws on the consumption of plastic bags in Peru and Chile Rondon-Jara, Evelyn; Lipa-Echevarría, Kimberly; Marchena-Barrientos, Sabrina; Chambi-Quispe, Mery Laura; Carocancha-Condori, Gonzalo Jesús
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