Zanine, Anderson de Moura, Edson Mauro Santos, Daniele de Jesus Ferreira, and Odilon Gomes Pereira. 2007. “Efect of Urea Levels on the Nutritional Value of Tanzania-Grass Hay”. Semina: Ciências Agrárias 28 (2):333-40. https://doi.org/10.5433/1679-0359.2007v28n2p333.