@book{51926,
	author = {WALCZYK, Zbigniew},
	title = {Wytrzymałość materiałów :},
	publisher = {Wydaw. Politechniki Gdańskiej,},
	year = {1999.},
	address = {Gdańsk :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=51926}
}