Sanmiguel-Plazas, Rosa Angélica, Claudia Alexandra Rodríguez-Niño, and Wilson Javier Aguirre-Pedreros. 2015. “Humic Substances Decrease the Stress in Layer Hens During the Post Molting Phase”. Ciencia Y Agricultura 12 (1):57-64. https://doi.org/10.19053/01228420.4121.