We are pleased to be able to announce the publication of a book by József Tóth, one of our distinguished elder statesmen and founding fathers. “Gravitational Systems of Groundwater Flow: Theory, Evaluation, Utilisation” recognises groundwater flow as a fundamental geologic agent, and presents a wide-ranging overview of its history, principles, scientific consequences and practical utilisation. Dr. Tóth draws on all his long experience to highlight relationships between apparently disparate processes and to trace them to a common cause in gravity-driven groundwater flow. The book includes examples of practical applications drawn from many fields of hydrogeological practice, and will become a key reference for researchers, consultants and students alike. The book is published by Cambridge University Press at www.cambridge.org quoting the ISBN 9780521886383, and the publishers are currently offering a 20% discount.