Information retrieval systems

Bibliográfalaš dieđut
Váldodahkki:	Lancaster, Frederick Wilfrid 1933-
Materiálatiipa:	Girji
Giella:	eaŋgalasgiella
Almmustuhtton:	New York John Wiley & Sons c>1979
Preanttus:	2nd ed.
Ráidu:	Information science series
Fáttát:	Information storage and retrieval systems.