@book{1525,
	author = {Bolton, William, and Blair, R.,},
	title = {Poultry nutrition.},
	publisher = {H.M.S.O.,},
	year = {1974.},
	series = {Bulletin - Ministry of Agriculture, Fisheries and Food ; 174},
	address = {London :},
	edition = {4th ed. /},
	note = {Previous ed. by W. Bolton published in 1967.}
}