@book{4507,
	author = {Snell, Foster Dee and Snell, Cornelia T.},
	title = {Colorimetric methods of analysis (vol-4/AAA)},
	publisher = {Van Nostrand Reinhold},
	year = {1971},
	series = {4/AAA},
	address = {New York},
	note = {94844 / 22.03.1979}
}