@book{26159,
	author = {Worboys, Michael. and Duckham, Matt,},
	title = {GIS :},
	publisher = {CRC Press,},
	year = {c2004.},
	address = {Boca Raton, Fla. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/fy051/2004045490.html}
}