@article {73844,
	title = {Response of layer performance to dietary natural pro-vitamin (A) sources.},
	journal = {Egyptian Poultry Science Journal},
	volume = {20},
	year = {2000},
	note = {n/a},
	pages = {703-719},
	publisher = {Egyptian Poultry Science Association},
	abstract = {n/a},
	isbn = {1110-5623},
	author = {El-Husseiny, O. and Arafa, S and Abdel-Motagally, Z and El-Mallah, G}
}
