United Nations Institute for Training and Research - UNITAR 1 Avis International Al Thabat Holding Company 2 Avis Al-Seeb Al Hassafa Office for Auditing, Financial and Economic Consulting - PAFEC 1 Avis Muscat Security and Safety Services 66 Avis Muscat Nakheel Oman Development Company - Oman Agriculture Development 142 Avis Muscat Lire la suite