@book{6487,
	author = {Carslaw, H. S.},
	title = {Easy numerical trigonometry /},
	editor = {W.C. Penfold & Co.)},
	publisher = {Angus & Robertson,},
	year = {1916},
	address = {Sydney :},
	note = {Based upon author's Easy numerical trigonometry of the right-angled triangle.}
}