@book{542405,
	author = {De Blij, Harm J. and Murphy, Alexander B.,},
	title = {Human geography :},
	publisher = {National Book Foundation,},
	year = {c2003.},
	address = {Islamabad :},
	edition = {7th ed. /},
	url = {http://www.loc.gov/catdir/toc/wiley023/2002066396.html}
}