| Table of contents Rev. P+L vol.14 no.2 Caldas July/Dec. 2019 Editorial | | | | · La transformación de la realidad y su realidad
| | | Original article | | | | · Metal fumes: exposure to heavy metals, their relationship with oxidative stress and their effect on health Marrugo, Diana Gómez; León-Méndez, Deisy; Silva, Jorge Puello; Granados-Conde, Clemente; León-Méndez, Glicerio
| | | | · Activated clays for the bleaching of palm oil and the removal of indigo carmin blue dye from water Montaño, Diego F.; Rosero, Milton; Torres Palma, Ricardo
| | | | · Analysis of Occupational Safety and Health Practices in the Handling of Carcinogenic Chemical Substances and Products in the laboratories of the Metropolitan Technology Institute - ITM. Bonilla, Yiceth Carina Mosquera; Benjumea, José Gonzalo Narváez
| | | | · Trends and Research Evolution on Sustainable Mobility: A bibliometric approach Uribe-Bedoya, Hernán; Valencia-Arias, Alejandro; Ramos y Yovera, Santiago
| | | | · Techniques of financial multiples to value shares of companies in the electricity sector in Colombia Boada, Antonio; Castaño, Diego
| | | | · Analysis of Road Safety in Educational Institutions with Multiple Sites, Cartagena de Indias, Colombia Muñoz Torres, Diego Fernando; Lozano Pérez, Grace; Espinel de Segura, Blanca
| | | Review article | | | | · Colombia, aligning itself to compliance with sustainable development objective n°6 on clean water and sanitation? Salazar, Julieth Forero; Villamil, Jéssica Castellanos; Cruz, Wílder Enrique Imbol
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