Information retrieval systems characteristics, testing and evaluation

Manylion Llyfryddiaeth
Prif Awdur:	Lancaster, F. Wilfrid
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	New York John Wiley & Sons c1979
Rhifyn:	2nd ed.
Pynciau:	Information storage and retrieval systems.