@book{57960,
	author = {United Nations},
	title = {Specifications for the identity and purity of food additives and their toxicological evaluation: some food colours, emulsifiers, stabilizers, anticaking agents, and certain other substances; thirteenth report of the Joint FAO/WHO Expert Committee on Food Additives, Rome, 27 May-4 June 1969.},
	publisher = {FAO,},
	year = {1970},
	series = {  WHO technical report series, 445},
	address = {Rome :}
}