Tsar Tank [SEP] service entry
What year was Tsar Tank introduced? What year was Tsar Tank commissioned? In what year did Tsar Tank enter service? What year did Tsar Tank come into use? What year was the service entry date for Tsar Tank? What was the year that Tsar Tank entered service? What year is Tsar Tank associated with? In which year was the service entry date for Tsar Tank? What was the year Tsar Tank entered service? Which was the official year for the approval of Tsar Tank?
1914
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Section::::Abstract.
Tsar Tank
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