@book{26286,
	author = {Bengtson, N. A. and Van Royen, William,},
	title = {Fundamentals of economic geography /},
	publisher = {Prentice-Hall,},
	year = {1950.},
	series = {Prentice-Hall geography series},
	address = {New York :},
	edition = {3rd ed.}
}