"Ritt" . "1893"^^ . . _:Bb41b8e0f04e286a4a2d21161a62084b8 . . . . "1951"^^ . "Joseph Fels Ritt" . "Joseph Fels" . "Ritt, Joseph Fels (1893-1951)" . _:Bb41b8e0f04e286a4a2d21161a62084b8 . _:Bb41b8e0f04e286a4a2d21161a62084b8 . _:Bb41b8e0f04e286a4a2d21161a62084b8 "2023-05-21"^^ . _:Bb41b8e0f04e286a4a2d21161a62084b8 . _:Bb41b8e0f04e286a4a2d21161a62084b8 . _:Bb41b8e0f04e286a4a2d21161a62084b8 "152819835" . _:Bb41b8e0f04e286a4a2d21161a62084b8 . _:Bb41b8e0f04e286a4a2d21161a62084b8 . _:Bb41b8e0f04e286a4a2d21161a62084b8 .