@book{15589,
	author = {Johri, K. N.},
	title = {Macro and semi-micro chemical analysis without H₂S, using potassium tri-thiocarbonate (PTC) reagent.},
	publisher = {Asia Publishing House,},
	year = {[1968]},
	address = {New York :},
	edition = {[2d rev. ed.]}
}