_:B2ffcf5c12ab4c2b03cd052ce67c0b77c . "Leonid Aleksandrovič" . "Portenko" . "Leonid Aleksandrovič Portenko" . . . . "Portenko, Leonid Aleksandrovič" . . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c "2023-05-20"^^ . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c "072979097" . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c . _:B2ffcf5c12ab4c2b03cd052ce67c0b77c .