"Ruth C. Duck" . . _:Bfcce581daa95a5a4393514b5b3017b0f . "Ruth C." . . "Duck, Ruth C. (1947-)" . . . "1947"^^ . "Duck" . _:Bfcce581daa95a5a4393514b5b3017b0f . _:Bfcce581daa95a5a4393514b5b3017b0f . _:Bfcce581daa95a5a4393514b5b3017b0f "2023-05-21"^^ . _:Bfcce581daa95a5a4393514b5b3017b0f . _:Bfcce581daa95a5a4393514b5b3017b0f . _:Bfcce581daa95a5a4393514b5b3017b0f "377291293" . _:Bfcce581daa95a5a4393514b5b3017b0f . _:Bfcce581daa95a5a4393514b5b3017b0f . _:Bfcce581daa95a5a4393514b5b3017b0f .