@book{26313,
	author = {IKON, Hans W. and LACKNER, Roman R.},
	title = {Handbuch der Betonprufung :},
	year = {1972.},
	address = {Dusseldorf,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=26313}
}