@book{20733,
	author = {Smith, Charles,},
	title = {An elementary treatise on conic sections by the methods of co-ordinate geometry /},
	publisher = {Macmillan,},
	year = {1910 [reprinted 1956].},
	address = {London :},
	edition = {New ed. rev. and enl},
	note = {On spine: Conic sections co-ordinate geometry}
}