Ho Thanh Tham, Ngo Van Man and Preston T R 2008 Performance of young cattle fed rice straw sprayed with mixture of urea and molasses supplemented with different levels of cassava leaf meal.  Livestock Research for Rural Development. Volume 20, Article #91. Retrieved , from http://www.cipav.org.co/lrrd/lrrd20/mekarn/tham20091.htm