Greece
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Aktor S.A.
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ALSTOM Transport S.A.
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Anatolia College
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Athens International Airport S.A.
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Attica Region
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Attiko Metro S.A.
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Avax S.A.
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Egnatia Odos S.A.
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ERGA O.S.E. S.A.
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Fraport Greece S.A.
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Hellenic Civil Aviation Authority
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Hellenic Organization for Standardization S.A.
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Hellenic Public Properties Company S.A.
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Intrakat S.A.
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ISAP S.A.
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J&P Avax
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Ministry of Environment and Energy
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Ministry of Infrastructure and Transport
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Ministry of National Defence
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North Aegean Region
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O.S.E. S.A.
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Open University of Greece
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TERNA S.A.
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University of Patras
Europe (other), Africa, Asia
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Albanian Railways
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Dubai Electricity & Water Authority
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Federal Foreign Office of Germany
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Federal Office for Buildings and Regional Planning of Germany
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General Directorate of Civil Aviation of Kuwait
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Jerusalem Transport Masterplan Team
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Ministry of National Defence
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KanAm Grund Kapitalanlagegesellschaft mbH
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Kosovo Railways Infrastructure
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Moldovan Roads Agency
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Public Enterprise for Railway Infrastructure of North Macedonia
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Roads Agency of North Macedonia
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Yapi Merkazi S.A.