Resource types have been revised.

The former resource types Factual Database, ePrint Server, and Subject Gateway are now generally typed as Miscellaneous.

Old links should redirect if defined for interfaces /start or /resource_type (more info on service interfaces).

A complete list of eBook-related resources is now available at http://vlib.mpg.de/start?type=Book%20Collection.

Hence the option eBooks has disappeared from the Special Content dropdown at http://vlib.mpg.de/start?srv=locate. Former deep links, for example http://vlib.mpg.de/start?special=ebooks, should continue to be supported if set up using the above service interfaces.