@book{51229,
	author = {Norris, P. W. and Legge, W. Seymour},
	title = {Mechanics via the calculus /},
	publisher = {Cleaver-House ltd.,},
	year = {1950 [Reprinted 1957, 1961]},
	address = {New York :},
	edition = {3d ed.}
}