321 Seriously Smart Things You Need to KnowMathilda Masters, Louize Perdieus · First published 2021Open the Tome
123 Seriously Smart Things You Need to Know about the ClimateMathilda Masters · First published 2020Open the Tome
321 choses incroyables. à connaître avant d'avoir 13 ansMathilda Masters, Louize Perdieus, Noëlle Michel · First published 2020Open the Tome
321 superschlaue Dinge, die du unbedingt wissen musstMathilda Masters · First published 2018Open the Tome
321 superslimme dingen die je moet weten voor je 13 wordt (Dutch Edition)Mathilda Masters · First published 2017Open the Tome
