This book is part of a book series called The Knowledge .

There are 160 pages in this book. This book was published 1998 by Scholastic .

Kjartan Poskitt has written over 80 books which have been translated into 30 languages. He is best known for writing the Murderous Maths series. Philip Reeve is a hugely talented author. He won the Carnegie Medal for Here Lies Arthur and is also the author of the Mortal Engines series, and Goblins which was shortlisted for the Roald Dahl Funny Prize.