Shoshe, N. Z., Baset, M. A., Islam, M. T., Matin, S. M., & Mahmud, M. A. A. (2015). Effects of herd, season and days in milk on milk urea nitrogen of crossbred dairy cows in Sylhet. Research in Agriculture Livestock and Fisheries, 2(2), 287–292. https://doi.org/10.3329/ralf.v2i2.25012