@book{16602,
	author = {Schoeman, C. F.},
	title = {Aspekte van natuurombewingsinvloede op arbeidsprestasie},
	publisher = {Drukkerij Holland,},
	year = {1955.},
	address = {Amsterdam,},
	url = {http://books.google.com/books?id=onsiAQAAMAAJ}
}