Israel Library Network Web Catalogs.
ULI - Israel Union Catalog - new & improved interface.
ULI - Israel Union Catalog - basic interface.
ULE - Untited Electronic Journal Subscriptions Catalog (of MALMAD Member Libraries in Israel).
ULS - Union List of Serials.
IHP - Index to Hebrew Periodicals.
RAMBI - Index of Articles on Jewish Studies.
Worlwide Catalogs (from the ULI website)
The British Library.
WorldCat.org: The World's Largest Library Catalog - A united collection of 72,000 libraries in 170 countries.
The Library of Congress Online Catalog - The catalog of the national library of the United States.