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2. Bureau International des Poids et Mesures (2012) International vocabulary of metrology–basic and general concepts and associated terms
3. International Hydrographic Organization (2020) Strategic plan 2021–2026
4. International Hydrographic Organization (2017) C17—spatial data infrastructures: “the marine dimension”—guidance for hydrographic offices
5. International Hydrographic Organization (2020) M3—resolutions of the IHO