Found 15 books 
[en] Borgon the Axeboy and the Whispering Temple Faber & Faber
[pt] Matemática mortífera (Saber Horrível) Editora Melhoramentos
![[The Knowledge 01] • Matemática mortífera (Saber Horrível)](/cover/b1E7H5ns3twMyM8I/small/[The%20Knowledge%2001]%20%e2%80%a2%20Matem%c3%a1tica%20mort%c3%adfera%20%28Saber%20Horr%c3%advel%29.jpg)
[pt] [The Knowledge 01] • Matemática mortífera (Saber Horrível) Melhoramentos
[en] Agatha Parrot and the Odd Street School Ghost Clarion Books
[en] Murderous Maths · the Brain-Bending Basics Scholastic Non-Fiction
![[The Knowledge 01] • Murderous Maths · All Shapes and Sizes](/cover/IggdrGSAXesIuoCb/small/[The%20Knowledge%2001]%20%e2%80%a2%20Murderous%20Maths%20%c2%b7%20All%20Shapes%20and%20Sizes.jpg)
[en] [The Knowledge 01] • Murderous Maths · All Shapes and Sizes Scholastic ltd
[en] Agatha Parrot and the Thirteenth Chicken Clarion Books
[en] Agatha Parrot and the Heart of Mud Clarion Books
[en] Murderous Maths · the Magic of Maths Scholastic Non-Fiction
[en] Murderous Maths · the Secret of Sums Scholastic Non-Fiction
[en] Murderous Maths · the Most Epic Book of Maths EVER Scholastic Non-Fiction
[en] Agatha Parrot and the Mushroom Boy Egmont UK
[en] Borgon the Axeboy and the Dangerous Breakfast Faber & Faber
[en] Borgon the Axeboy and the Prince's Shadow Faber & Faber
[de] Urgum der Barbar cbj Verlag