Vallejo Morán, Luis Alberto, et al. “Guiding Procedure for the Safe Handling of Chemicals in a Sole and Template Manufacturing Company a Polyurethane Base from the City of Cali - Colombia”. Revista De Investigación Agraria Y Ambiental, vol. 11, no. 2, July 2020, pp. 157-7, https://doi.org/10.22490/21456453.3461.