@book{8727,
	author = {Sommer, Alfred, and Sommer, Alfred, and World Health Organization.},
	title = {Vitamin A deficiency and its consequences :},
	publisher = {World Health Organization,},
	year = {1995.},
	address = {Geneva :},
	edition = {3rd ed.},
	note = {Rev. ed. of: Field guide to the detection and control of xerophthalmia. 2nd ed. 1982.}
}