INASP Directory of Free and Open Access Online Resources
There are many free, high quality information resources available on the Internet. This listing provides links to some of them, organised into subject areas for ease of navigation. (Please note that the list is not intended as a comprehensive catalogue, but as an indication of the types of material available.)

OAIster is a union catalog of digital resources.
We provide access to these digital resources by "harvesting" their descriptive metadata (records) using OAI-PMH (the Open Archives Initiative Protocol for Metadata Harvesting).

Indiana University Press publishing.
Now you have access to the full text of IUP publication. Interested users can address the NUR Library to get login information.

International Telecommunication Union.
ITU is the leading United Nations agency for information and communication technologies. As the global focal point for governments and the private sector, ITU's role in helping the world communicate spans 3 core sectors: radiocommunication, standardization and development. ITU also organizes TELECOM events and was the lead organizing agency of the World Summit on the Information Society.

Zentralblatt MATH Database.
ZBMATH provides a comprehensive coverage of the international mathematical research published since 1868. It contains articles from about 3,500 journals and 1,100 serials, books of all publishers, available proceedings of conferences, and other research papers appearing in any language.

Currently, more than 6,000 scientists from all over the world are active in providing Zentralblatt with reviews. The reviews are written mainly in English, but reviews in French or German are also to be found.

Reviews undergo an editorial process and are finally produced getting an accession number of the form xxxx.xxxxx. Morover, preliminary information on not yet edited documents is provided. These documents have an 8-digit accession number and cover the most recently published literature.