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Leonid Haydamaka was born in 1898.
Leonid Haydamaka died in 1991.
Leonid Martynyuk's birth name is Martynyuk, Leonid Vladimirovich.
Leonid Kraynenkov's birth name is Krajnenkov, Leonid Sergeyevich.
Leonid Lyubashevsky's birth name is Lyubashevsky, Leonid Solomonovich.