@book{6643,
	author = {GERSTENKORN, Tadeusz and ŚRÓDKA, Tadeusz},
	title = {Kombinatoryka i rachunek prawdopodobieństwa /},
	year = {1980.},
	address = {Warszawa,},
	edition = {Wyd. 6.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=6643}
}