"1919"^^ . . "Percy" . "Charles H." . . . . _:Bb25639648a4df9f320c0338539f4141b . "Charles H. Percy" . "Percy, Charles H. (1919-)" . _:Bb25639648a4df9f320c0338539f4141b . _:Bb25639648a4df9f320c0338539f4141b . _:Bb25639648a4df9f320c0338539f4141b "2023-05-21"^^ . _:Bb25639648a4df9f320c0338539f4141b . _:Bb25639648a4df9f320c0338539f4141b . _:Bb25639648a4df9f320c0338539f4141b "228179343" . _:Bb25639648a4df9f320c0338539f4141b . _:Bb25639648a4df9f320c0338539f4141b . _:Bb25639648a4df9f320c0338539f4141b .