Urinary stone disease constitutes more than a quarter of urologists’ workload in the Western countries and is more than half in the Middle-East and Central Asian countries. The surgical management of stone disease has changed considerably in the last five years and our understanding of mechanism of stone disease has improved with some old concepts discarded and newer theories gaining ground. Covering the entire spectrum of urinary stone disease and with contributions of more than fifty internationally recognised experts, this exhaustive and complex reference work will be invaluable to all urologists, nephrologists and non-medical scientists.

This practical and knowledgeable guidebook deals comprehensively with the stone circles of Britain and Ireland and with the cromlechs and megalithic "horseshoes" of Brittany. This new edition includes a section on "Druidical" circles, romantic creations of the late eighteenth and early nineteenth centuries. "This book is not only an elegant and practical guide, it is also the best single-volume study of this extraordinary phenomenon, embracing 500 monuments from Shetland to Brittany. . . . Confident, erudite, pleasurable, this volume can be recommended as travel guide, archaeology, literature, and sheer good company."--Ian Sheperd, British Archaeology "This is a wonderful book and is a must for anyone remotely interested in things megalithic."--Paul Walsh, Archaeology Ireland

There is considerable academic and practical interest in stone and stone buildings, as exemplified by the wide range of high-quality and innovative work being conducted in the pursuit of the effective preservation and restoration of historic buildings. This is reflected in the numerous publications on stone and stone buildings that regularly find their way into the public domain. Not least amongst these are a number of Geological Society Special Publications, which have appeared in recent years. This current volume seeks to bring to the attention of the various professionals in the field (geologists, architects, engineers, conservators and conservation scientists) recent work centred on the characterization and performance of this important resource and its use in historic buildings. The volume has wider relevance, including to those interested in the heritage of stone.

The spectacular stone circles of western Europe, some nearly 6000 years old, have intrigued viewers through the ages. This beautiful book about these megalithic rings explores their ancestry, methods of construction, and eventual desertion. A substantially revised version of Aubrey Burl's highly praised work The Stone Circles of the British Isles, it offers new insights into the purpose of stone circles. It also provides a new interpretation of Stonehenge and of Callanish in Scotland, the first overview of the cromlechs in Brittany, a discussion of the problems of archaeoastronomy as related to stone circles, a greatly expanded Gazetteer, and an up-to-date list of radiocarbon dates and recent excavations.

Calcification in Biological Systems provides a collection of up-to-date papers regarding calcification in a variety of biological systems. The papers are not simple reviews of the literature. Each paper reflects the personal experience of the author(s) and is rich in constructive criticism and suggestions. Topics range from basic molecular processes to general structural problems in systems as different as unicellular organisms and human skeletal tissues. Because calcification is so diffuse in the animal kingdom, this book makes no attempt to achieve a conclusive synthesis of available results and current ideas. Instead, its merit lies in its ability to be useful to investigators with different scientific backgrounds and areas of interest.