@book{29410,
	author = {Heldring, Balthazar },
	title = {Van Calcutta tot Ceylon :},
	publisher = {Van Holkema & Warendorf, },
	year = {1925.},
	address = {Amsterdam : },
	url = {http://www.worldcat.org/title/van-calcutta-tot-ceylon/oclc/781588325&referer=brief_results}
}