Understanding information systems what they do and why we need them /

Geahča maid

• Understanding information systems what they do and why we need them /
  Dahkki: Ratzan, Lee
  Almmustuhtton: (2004)
• Libraries in the twenty-first century : charting new directions in information services /
  Almmustuhtton: (2011)
• Libraries in the twenty-first century : charting new directions in information services /
  Almmustuhtton: (2011)
• The geometry of information retrieval
  Dahkki: Van Rijsbergen, C. J., 1943-
  Almmustuhtton: (2004)
• The geometry of information retrieval
  Dahkki: Van Rijsbergen, C. J., 1943-
  Almmustuhtton: (2004)