@book{129,
	author = {Leyko, Jerzy},
	title = {Zbiór zadań z mechaniki ogólnej :},
	year = {1978.},
	address = {Warszawa,},
	edition = {Wyd. 4.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=129}
}