Akhtopol / Sofia / Bourgas / Warsaw / Leipzig / Frankfurt am Main / Varna / Prague / Amsterdam / Cartagena / Ankara / Kronstadt / Kirkkonummi / /
Continent
Europe / /
Country
Germany / Switzerland / Romania / Netherlands / Croatia / Italy / Estonia / Slovenia / Bulgaria / Latvia / Sweden / Poland / Norway / Colombia / Belgium / Turkey / France / Bosnia and Herzegovina / Russia / Austria / Slovakia / United Kingdom / Lithuania / Finland / Spain / Denmark / / /
Facility
centre of Varna / Reasearch Institute / / /
IndustryTerm
order levelling networks / order networks / order levelling network / height systems / data processing / tide gauge site / recent levelling network / geodetic applications / /
NaturalFeature
Baltic Sea / Danube River / Black Sea / Black Sea coast / =ˆ heights / /
Organization
European Task Force on Vertical Datums / Reasearch Institute / Subcommission for Europe / Institut für Angewandte Geodäsie / /
Person
Boris III / / /
Position
Tsar / /
Region
Western Europe / Bulgarian Black Sea / Black Sea / South East Europe / /