@book{27102,
	author = {PITLOUN, Rudolf},
	title = {Vibrating beams :},
	publisher = {VEB Verl. für Bauwesen,},
	year = {1971.},
	address = {Berlin :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=27102}
}