_:B480b5fc4dc47c975fd6b66d9d0f58c51 . _:B480b5fc4dc47c975fd6b66d9d0f58c51 . _:B480b5fc4dc47c975fd6b66d9d0f58c51 "2023-05-21"^^ . _:B480b5fc4dc47c975fd6b66d9d0f58c51 . _:B480b5fc4dc47c975fd6b66d9d0f58c51 . _:B480b5fc4dc47c975fd6b66d9d0f58c51 "074845942" . _:B480b5fc4dc47c975fd6b66d9d0f58c51 . _:B480b5fc4dc47c975fd6b66d9d0f58c51 . _:B480b5fc4dc47c975fd6b66d9d0f58c51 . "Holzer, Jerzy Z. (1930-)" . "Jerzy Z. Holzer" . "Holzer" . . _:B480b5fc4dc47c975fd6b66d9d0f58c51 . "Jerzy Z." . . . "Holzer, Jerzy" . "Warsaw School of Economics, Institute of Statistics and Demography, Warsaw, Poland"@nl . "1930"^^ .