. "H." . "Walravens, H. (1944-)" . . "1944"^^ . "Walravens" . . . "Walravens, Hartmut" . _:B3831b8cf03cac033b56501a44f7da896 . "H. Walravens" . _:B3831b8cf03cac033b56501a44f7da896 . _:B3831b8cf03cac033b56501a44f7da896 . _:B3831b8cf03cac033b56501a44f7da896 "2023-05-22"^^ . _:B3831b8cf03cac033b56501a44f7da896 . _:B3831b8cf03cac033b56501a44f7da896 . _:B3831b8cf03cac033b56501a44f7da896 "06775273X" . _:B3831b8cf03cac033b56501a44f7da896 . _:B3831b8cf03cac033b56501a44f7da896 . _:B3831b8cf03cac033b56501a44f7da896 .