|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||today||35.86||$23.68||You save $12.18|
|Amazon US||today||23.76||$23.68||You save $0.08|
John Farndon studied Earth science at Cambridge University, UK. He has written widely on science subjects and was shortlisted three times for the Copus Science Book Prize, for books such as How the Earth Works (Dorling Kindersley) and The Book of the Brain (Hodder). His speciality remains Earth science and he is the author of the Dictionary of the Earth (Dorling Kindersley), Rocks and Crystals (Sterling), Rocks and Minerals (Benchmark Books) and e-Guides Rock and Mineral (Dorling Kindersley).