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Nikolai Roslavets died in 1944.
Nikolai Roslavets was born in 1881.
Nikolai Maletsky's birth name is Maletsky, Nikolai Leonidovich.
Nikolai Dupak's birth name is Nikolai Lukyanovitch Dupak.
Nikolai Kovalsky's birth name is Kovalsky, Nikolai Petrovich.