Geological Society of London. Used - Very Good. Used - Very Good. Ships from UK in 48 hours or less (usually same day). Your purchase helps support the African Children's Educational Trust (A-CET). Ex-library, but has been well cared for. 100% money back guarantee. We are a world class secondhand bookstore based in Hertfordshire, United Kingdom and specialize in high quality textbooks across an enormous variety of subjects. We aim to provide a vast range of textbooks, rare and collectible books at a great price. Through our work with A-CET we have helped give hundreds of young people in Africa the vital chance to get an education. We provide a 100% money back guarantee and are dedicated to providing our customers with the highest standards of service in the bookselling industry.