@book{480872,
	author = {Gregory, K. J. and Sage eBooks},
	title = {Physical geography},
	publisher = {SAGE,},
	year = {2005.},
	series = {Fundamentals of geography},
	address = {London :},
	url = {http://ezproxy.alfaisal.edu/login?url=http://sk.sagepub.com/navigator/physical-geography}
}