@book{41998,
	author = {Speight, J. G.},
	title = {Natural gas :},
	publisher = {Gulf Pub. Co.,},
	year = {c2007.},
	address = {Houston, Tex. :},
	note = {Includes bibliographical references and index.},
	url = {http://www.loc.gov/catdir/toc/ecip0714/2007013232.html}
}