@book{49966,
	author = {Allan, A. L.,},
	title = {Principles of geospatial surveying /},
	publisher = {Whittles Publishing,},
	year = {[2007]},
	address = {Dunbeath, Scotland :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10904592}
}