novaya zemlya, spitzbergen, yenisei river, kamchatka peninsula, tatar strait, wrangel island, barents sea, spitsbergen, kamchatka, kola peninsula, altai mountains, ussuri, arctic circle, peterhof, carpathian mountains, lake onega, vitus bering, oceanology, lake ladoga, chelyuskin, irtysh river, bathyscaph, taiga, ob river, taimyr, chichagof island, inner hebrides, anadyr, little diomede, jan mayen, nenets, floe, baltic sea, pamirs, neva river, laptev sea, fridtjof nansen, bothnia, bathyscaphe, cheboksary, svalbard, exclave, dnieper, yeisk, helgoland, tsugaru strait, transpolar, nizhni novgorod, lutsk, evenk, marquesas islands, dvina, orkneys, weddell sea, saaremaa, birobidzhan, chuvash, tatra mountains, kirghizia, aland islands, yenisei, petrozavodsk, ural mountains, amur river, longyearbyen, frobisher bay, fjord, yenisey river, tobolsk, ionian sea, antarctic continent, pechora, gota canal, skagerrak, vyborg, hallstatt, pinsk, subantarctic, syrtis major, hydrobiology, lolland, vologda, caspian sea, okhotsk, yenisey, rybinsk, limnos, faial, eugeny, orkney islands, ligurian sea, tyrrhenian sea, caretta caretta, vltava, daugavpils, lwow, transylvanian alps, yakutsk, austral islands, kuril, finnmark, tien shan