@book{4516,
	author = {Snell, Foster Dee and Snell, Cornelia T.},
	title = {Colorimetric methods of analysis (vol-4/AA)},
	publisher = {Van Nostrand Reinhold},
	year = {1970},
	series = {4/AA},
	address = {New York},
	note = {94844 / 22.03.1979}
}