"ruimte (astronomie)" . . "Explosions Sibérie (Russie)." . . "Nuclear explosions Russia (Federation) Siberia." . . "Physique." . . "Toungouska, Météorite de la." . . "Physics." . . "Astrophysics." . . "Explosions nucléaires Russie Sibérie." . . "astronomie." . . "Science." . . "Russia (Federation)" . . . . . . . . . . . "History"@en . "History" . . . . . . . . . . . . . "The Tunguska mystery"@en . . "The Tunguska mystery" . . . . . . . . . . . . "Details the nature and results of Tunguska investigations in the former USSR and present-day CIS. This book presents certain unusual findings of Russian and Ukrainian scholars. It considers certain so-called 'unconventional hypotheses' about the nature of the Tunguska explosion." . "Details the nature and results of Tunguska investigations in the former USSR and present-day CIS. This book presents certain unusual findings of Russian and Ukrainian scholars. It considers certain so-called 'unconventional hypotheses' about the nature of the Tunguska explosion."@en . . . . . . . "The Tunguska Mystery"@en . . . "The Tunguska Mystery" . . . . "Electronic books" . "Electronic books"@en . . . . . . "Tunguska mystery" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Météorites Russie Sibérie." . . . . "Wetenschap." . . "Science: Astronomy." . . "SCIENCE Astronomy." . "Electronic books." . . "Popular Science in Astronomy." . . "Popular Science in Astronomy" . "ruimtevaart." . . "Extraterrestrial Physics, Space Sciences." . . "Extraterrestrial Physics, Space Sciences" . "Meteorites." . . "popularisering wetenschap." . . "Météorite de Toungouska." . . "Tunguska-Ereignis." . . "Astronomy." . . "Tunguska meteorite." . . "Meteorites Russia (Federation) Siberia." . . "Ruimteonderzoek." . . "Nuclear explosions." . . "Meteorit Sibirien." . .