This book is part of a book series called World Of .

This book has been graded for interest at 9-12 years.

There are 160 pages in this book. This is a reference book. This book was published 2017 by Firefly Books .

The author, Ian Graham, is a full-time writer of books and magazines, specialising in technology. Phil Wilkinson is a freelance writer and the author of 50 books, as well as being a dad of two. He is a contributor to a number of parenting sites, including the Huffington Post, writing about education, bullying, sex education and teenagers. Philip Wilkinson has written nearly fifty books for adults and children. They range from his first book, Amazing Buildings, which won an award from the American Institute of Architects, to A Celebration of Customs and Rituals, which was endorsed by the United Nations. He has also written several successful TV tie-ins, including What the Romans Did for Us and Restoration. He lives in the Cotswolds, England, with his wife and son. Oliver Green, Research Fellow and former Head Curator of the London Transport Museum. Oliver has written and co-authored many transport books, including Underground: how the Tube shaped London (Penguin 2012). Contributing authors Ian Graham and Philip Wilkinson have written and consulted on a number of children's nonfiction books. Andrew Nahum is the Principal Curator of Technology and Engineering at The Science Museum, London.