_:B4340ee27e8ed4a856db2de1b915909ed . "Gustav" . "Heckmann" . "1898"^^ . "Gustav Heckmann" . . . "Heckmann, Gustav (1898-)" . . _:B4340ee27e8ed4a856db2de1b915909ed . _:B4340ee27e8ed4a856db2de1b915909ed . _:B4340ee27e8ed4a856db2de1b915909ed "2023-05-20"^^ . _:B4340ee27e8ed4a856db2de1b915909ed . _:B4340ee27e8ed4a856db2de1b915909ed . _:B4340ee27e8ed4a856db2de1b915909ed "068341679" . _:B4340ee27e8ed4a856db2de1b915909ed . _:B4340ee27e8ed4a856db2de1b915909ed . _:B4340ee27e8ed4a856db2de1b915909ed .