"Чертков, Леонид Натанович" . _:B5dfb3d4befc3acda45137d39645f83f4 . "Леонид" . "Tchertkov, Leonid" . "Čertkov, Leonid Natanovič" . . "Čertkov, L.N." . "Чертков, Леонид (1933-2000)" . . "Чертков, Л.Н." . "1933"^^ . "Leonid Čertkov" . . . "Леонид Чертков" . "2000"^^ . "Чертков" . "Čertkov" . "Leonid" . "Čertkov, Leonid (1933-2000)" . _:B5dfb3d4befc3acda45137d39645f83f4 . _:B5dfb3d4befc3acda45137d39645f83f4 . _:B5dfb3d4befc3acda45137d39645f83f4 "2023-05-22"^^ . _:B5dfb3d4befc3acda45137d39645f83f4 . _:B5dfb3d4befc3acda45137d39645f83f4 . _:B5dfb3d4befc3acda45137d39645f83f4 "069982252" . _:B5dfb3d4befc3acda45137d39645f83f4 . _:B5dfb3d4befc3acda45137d39645f83f4 . _:B5dfb3d4befc3acda45137d39645f83f4 .