. "1911"^^ . "John Backus" . . . "Backus, John (1911-)" . "Backus" . "John" . _:B4b0e9845fa47d7137076e41fc5a84620 . . _:B4b0e9845fa47d7137076e41fc5a84620 . _:B4b0e9845fa47d7137076e41fc5a84620 . _:B4b0e9845fa47d7137076e41fc5a84620 "2023-05-22"^^ . _:B4b0e9845fa47d7137076e41fc5a84620 . _:B4b0e9845fa47d7137076e41fc5a84620 . _:B4b0e9845fa47d7137076e41fc5a84620 "069605556" . _:B4b0e9845fa47d7137076e41fc5a84620 . _:B4b0e9845fa47d7137076e41fc5a84620 . _:B4b0e9845fa47d7137076e41fc5a84620 .