Castellanos, S., Gamarra, J., Gómez, C., & Fernández, M. (2017). Amonification of corn stover (Zea mays L) with three levels of urea to improve its digestibility. Revista De Investigaciones Veterinarias Del Perú, 28(1), 78-85. https://doi.org/10.15381/rivep.v28i1.12946