@book{7612,
	author = {Norbury, David. and ebrary, Inc.},
	title = {Soil and rock description in engineering practice},
	publisher = {Whittles Pub. ;},
	year = {2010.},
	address = {Dunbeath, Scotland :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10698308}
}