How the Steel Was Tempered

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How the Steel Was Tempered

Russian cover
Author	Nikolai Ostrovsky
Original title	Как закалялась сталь
Language	Russian
Genre	Socialist realism
Publisher	Young Guard (serial)
Publication date	1932–1934 (serial) – 1936 (book)
Publication place	Soviet Union
Media type	Print (hardback & paperback)

How the Steel Was Tempered (Russian: Как закалялась сталь, romanized: Kak zakalyalas stal) or The Making of a Hero, is a socialist realist novel written by Nikolai Ostrovsky (1904–1936). With 36.4 million copies sold, it is one of the best-selling books of all time^[1] and the best-selling book in the Russian language.