Parada, M., Andrade, M., Carreras, F. and Flores, B. 2018. OBTAINING A SURFACTANT MATERIAL FROM THE TALLOW RECOVERY PROCESS FROM TANNERY INDUSTRIES. Perfiles. 2, 20 (Dec. 2018), 33-39. DOI:https://doi.org/10.47187/perf.v2i20.31.