@book{57217,
	author = {Symposium on Recent Development in the Use of New Sources of Protein Amino Acids an Non-Protein Nitrogen with Special Reference to Ruminants. (},
	title = {Proceedings},
	publisher = {Comisión Económica para Europa,},
	year = {1976},
	series = {ECE/AGRI/31},
	address = {New York :}
}