Rioolwater moet #coronavirus verraden https://t.co/s7VRz1efNP
Sewage must betray #coronavirus https://t.co/s7VRz1efNP
onderwijs: examens, ICT / ‘Eindhoven deGekste’ / Land van Cadzand / Probus / columnist https://t.co/0Iy3BCEsWV / https://t.co/SKVvVObwUi
education exams, ICT / 'Eindhoven deGekste' / Land Cadzand / Probus / columnist https://t.co/0Iy3BCEsWV / https://t.co/SKVvVObwUi