_:Bb903ba6629e8ec885602d0f6ba93b6c2 . "Robert H." . "Kupperman" . "1935"^^ . "Robert H. Kupperman" . . . "Kupperman, Robert H. (1935-)" . . _:Bb903ba6629e8ec885602d0f6ba93b6c2 . _:Bb903ba6629e8ec885602d0f6ba93b6c2 . _:Bb903ba6629e8ec885602d0f6ba93b6c2 "2023-05-19"^^ . _:Bb903ba6629e8ec885602d0f6ba93b6c2 . _:Bb903ba6629e8ec885602d0f6ba93b6c2 . _:Bb903ba6629e8ec885602d0f6ba93b6c2 "069576912" . _:Bb903ba6629e8ec885602d0f6ba93b6c2 . _:Bb903ba6629e8ec885602d0f6ba93b6c2 . _:Bb903ba6629e8ec885602d0f6ba93b6c2 .