From fire engines to submarines, tractors to diggers, this series takes an in-depth book at some amazing machines at work.
This book is part of a book series called Qed Machines At Work .
This book is aimed at children in primary school.
There are 32 pages in this book. This book was published 2006 by QED Publishing .
The author, Ian Graham, is a full-time writer of books and magazines, specialising in technology.
