Handbook of reference and information services/

Eitemau Tebyg

• Handbook of reference and information services /
  gan: Sewa Singh
  Cyhoeddwyd: (1997)
• Handbook of reference of Information services
  gan: Tseng G
  Cyhoeddwyd: (1997)
• Handbook of reference of information services: some new dimensions /
  Cyhoeddwyd: (1997)
• Reference information services /
  gan: Bopp, Richard E.
  Cyhoeddwyd: (2005)
• reference and information services :
  gan: Cassell, Kay Ann