@book{20428,
	author = {KLEJA, Jacek},
	title = {Elementy podstaw teorii drgań /},
	year = {1981.},
	address = {Częstochowa,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=20428}
}