@book{27569,
	author = {ZAKRZEWSKI, Marek and ZIAJA, Jerzy},
	title = {Mechanika pękania /},
	year = {1977.},
	address = {Wrocław,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=27569}
}