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Boeklezers.nl is a network for social reading. We help readers discover new books and authors, and bring readers in contact with each other and with writers. Read more ».
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Earthquakes
Why does the ground shake during an earthquake? What machine draws wiggly linesto measure ground movement? How can you stay safe in an earthquake? Read thisb... »
Why does the ground shake during an earthquake? What machine draws wiggly linesto measure ground movement? How can you stay safe in an earthquake? Read thisb... »
Idea box
