@book{19421,
	author = {Oltjen, James W. and Kebreab, Ermias.},
	title = {Energy and protein metabolism and nutrition in sustainable animal production 4th International Symposium on Energy and Protein Metabolism and Nutrition Sacramento, California, USA 9-12 September 2013 /},
	publisher = {Wageningen Academic Publishers,},
	year = {c2013.},
	address = {[S.l.] :}
}