@book{15148,
	title = {Gruppy s sistemami dopolnjaemych podgrupp /},
	publisher = {Izdat. Inst. Matem. AN USSR,},
	year = {1971.},
	address = {Kiev :},
	note = {[Alf. ros.].},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=15148}
}