_:Bb0ecbaf897375fb5b315ae82bef421f9 . "H.D." . "Ursell" . "H.D. Ursell" . . . . "Ursell, H.D." . . _:Bb0ecbaf897375fb5b315ae82bef421f9 . _:Bb0ecbaf897375fb5b315ae82bef421f9 . _:Bb0ecbaf897375fb5b315ae82bef421f9 "2023-05-21"^^ . _:Bb0ecbaf897375fb5b315ae82bef421f9 . _:Bb0ecbaf897375fb5b315ae82bef421f9 . _:Bb0ecbaf897375fb5b315ae82bef421f9 "160440041" . _:Bb0ecbaf897375fb5b315ae82bef421f9 . _:Bb0ecbaf897375fb5b315ae82bef421f9 . _:Bb0ecbaf897375fb5b315ae82bef421f9 .