2026 Reading Challenge

Join the Goodreads Author Program

Are you Marcel Vonk, author of the books below?
De race tegen de schildpad by Marcel Vonk Van getal naar heelal by Marcel Vonk Zwarte gaten by Marcel Vonk Snaartheorie by Marcel Vonk Van Getal naar Heelal by Marcel Vonk De race tegen de schildpad by Marcel Vonk


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