The Centrale Catalogus Ziekenhuisbibliotheken (CCZ) is a central catalog for Dutch hospital libraries, which enables them to catalog directly in the Gemeenschappelijk Geautomatiseerd Catalogiseersysteem (GGC) and gives them access to the CCZ. A subscription to the CCZ can be extended with access to PiCarta, NCC-IBL, and WorldCat. For more information, see the CCZ page in Dutch.