@book{58595,
	author = {Swan, Henry. and Lewis, Dyfed. and Nutrition Conference for Feed Manufacturets (9 : 1975 : Nottingham)},
	title = {Feed energy sources for livestock},
	publisher = {Butterworths,},
	year = {1976},
	series = {Studies in the agricultural and food science},
	address = {London :}
}