@book{123,
	author = { Chapman, Sydney and Bartels, Julius, jt. auth.},
	title = {Geomagnetism /},
	publisher = {Clarendon Press ,},
	year = {1940 [Reprinted 1951].},
	series = {International series of monographs on physics.},
	address = {Oxford :},
	edition = {1st ed.},
	url = {http://www.worldcat.org}
}