The Center of Unified Arab Index will open on Tuesday the knowledge portal of the Sultanate of Oman which is the sixth one in a series of portals of the libraries of countries within the framework of the project of the index gifted by the Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud to the Arab culture to support Arab infrastructure programs in the field of libraries and information. The Center's Director Dr Saleh Al-Masnad pointed out that the index's project supervised by King Abdulaziz Public Library embodies the cooperation of Arab libraries and information centers as a gesture of cultural unity and knowledge integration.