@book{49443,
	author = {National Geographic Society (U.S.)},
	title = {National geographic. 2010-2020},
	publisher = {National Geographic Society,},
	year = {�1959-},
	address = {[Washington, D.C.] :},
	note = {Title from cover.},
	url = {http://magma.nationalgeographic.com/ngm/data/html/home_refresh.html}
}