Bibliotheque Quebec
The British Library Public Catalogue
CIB Centro Inter-Bibliotecario:Bibliothece Cataloghi Archivi
Cleveland Public Library
COPAC * Central OPAC of UK & Irland
The European Library
Gemeinsamer Verbundkatalog (GBV)
Karlsruher Virtueller Katalog (KVK)
Library of Congress Online Catalog
Melvyl: The Catalog of the University of California Libraries
National Library of Medicine
New York Public Library
OhioLINK
Österreichischer Bibliothekenverbund
University of Toronto Library Catalogue
Washington Research Library Consortium
