@book{47108,
	author = {Dewar, J. D. and Anderson, R. and ebrary, Inc.},
	title = {Manual of ready-mixed concrete},
	publisher = {Blackie Academic & Professional,},
	year = {1992.},
	address = {London ;},
	edition = {2nd ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10062717}
}