_:B3d314d03d396559e2674ee676a97d41f . "Willi" . "Ziegler" . "Willi Ziegler" . . . . "Ziegler, Willi (geoloog)" . . _:B3d314d03d396559e2674ee676a97d41f . _:B3d314d03d396559e2674ee676a97d41f . _:B3d314d03d396559e2674ee676a97d41f "2023-05-19"^^ . _:B3d314d03d396559e2674ee676a97d41f . _:B3d314d03d396559e2674ee676a97d41f . _:B3d314d03d396559e2674ee676a97d41f "274402017" . _:B3d314d03d396559e2674ee676a97d41f . _:B3d314d03d396559e2674ee676a97d41f . _:B3d314d03d396559e2674ee676a97d41f .