_:Bb6c632d3351547b926c9e9f5a2115701 . . "531"^^ . . . "vaste stoffen ; mechanica"@nl . . "onderzoek naar de werking van de stoffen"@nl . . _:Bb6c632d3351547b926c9e9f5a2115701 . _:Bb6c632d3351547b926c9e9f5a2115701 . _:Bb6c632d3351547b926c9e9f5a2115701 "2021-09-24"^^ . _:Bb6c632d3351547b926c9e9f5a2115701 . _:Bb6c632d3351547b926c9e9f5a2115701 . _:Bb6c632d3351547b926c9e9f5a2115701 "075625210" . _:Bb6c632d3351547b926c9e9f5a2115701 . _:Bb6c632d3351547b926c9e9f5a2115701 . _:Bb6c632d3351547b926c9e9f5a2115701 .