@book{16759,
	author = {Yousef, Mohamed K.},
	title = {Animal production in the tropics /},
	publisher = {Praeger,},
	year = {1982.},
	address = {New York :},
	note = {Selected papers from a symposium held Feb. 21-25, 1981 at the University of Gezira, Wad Medani, Sudan.}
}