@book{28921,
	author = {OBRETENOV, Apostol and DIMITROV, Bojan},
	title = {Teoria masowej obsługi :},
	year = {1989.},
	address = {Warszawa,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=28921}
}