@book{11887,
	author = {GRÜN, Wolfgang},
	title = {Beton 1. Rohstoffe. Herstellung. Eigenschaften /},
	publisher = {Werner-Verlag,},
	year = {1969.},
	address = {Düsseldorf :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=11887}
}