@book{135611,
	author = {Sitter, William de. and Schaar, Jan Pieter van der. and ebrary, Inc.},
	title = {Kosmos},
	publisher = {Amsterdam Academic Archive,},
	year = {1934.},
	address = {[Amsterdam] :},
	note = {Originally published by W.P. Van Stockum & Zoon N.V. in 1934.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10443018}
}