@book{109880,
	author = {Deumlich, Fritz. and Faig, Wolfgang. and ebrary, Inc.},
	title = {Surveying instruments},
	publisher = {W. de Gruyter,},
	year = {1982, c1980.},
	address = {Berlin ;},
	note = {Translation of: Instrumentenkunde der Vermessungstechnik.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10599337}
}