"Danube River." . . "Danube River" . "Ukraine" . . "Danube River Valley" . . "Danube River Valley." . "Descrieri de călătorii." . . "Krymskai︠a︡ oblastʹ (Ukraine)" . . "Travel." . . "Natural history." . . "Natural history Ukraine Crimea." . . . . . . "Travels in Southern Russia and the Crimea : through Hungary, Wallachia, & Moldavia, during the year 1837"@en . . "Travels in southern Russia and the Crimea : through Hungary, Wallachia, & Moldavia, during the year 1837"@en . . . . . . . . . . . . . . "Travels in Southern Russia and the Crimea, through Hungary, Wallachia and Moldavia during the year 1837" . . "Travels in southern Russia and the Crimea, through Hungary, Wallachia, & Moldavia, during the year 1837"@en . "Travels in southern Russia and the Crimea through Hungary, Wallachia, & Moldavia, during the year 1837"@en . . . . . . . . . . . . . . . "Travels in southern Russia and the Crimea; through Hungary, Wallachia, & Moldavia, during the year 1837" . "Travels in Southern Russia and the Crimea through Hungary, Wallachia, & Moldavia, during the year 1837"@en . . . . . . . "Travels in southern Russia, and the Crimea; through Hungary, Wallachia, and Moldavia, during the year 1837"@en . "Natural history Ukraine Krymskai︠a︡ oblastʹ." . . . . "Soviet Union" . . "Soviet Union." . "Crimea (Ukraine)" . . "Romania" . . "Romania." . "Russia" . . "Russia." .