Hydrophyllaceae, Gentianaceae, Afrika

Field Guide to Wildflowers of South Africa describes more than 1 100 of the shrubs and herbs of the region, highlighting the most conspicuous species and those most likely to be encountered across the country. The emphasis is on identifying plants progressively to family, genus and species level: a novel identification aid and easy-to-use keys guide users to the correct family and genus, while individual species descriptions, accompanied by a clear photograph, distribution map and an indication of flowering season, help them to pinpoint the plant. By using the guide, wild-flower enthusiasts at all levels will now be able to accurately identify plants in any part of South africa.

A field guide to the wildlife of southern Africa, describing over 2,000 plants and animals, with accurate illustrations in full colour. This book has been a trusted fi eld companion for many years. Comprehensively updated, it now features range maps for most groups. The chapters are colour-coded for easy reference, and diagnostic features appear in bold type within the descriptions. Each chapter is written by a leading expert in the field. All the main plant and animal groups are covered: Lower invertebrates, Spiders and other arachnids, Insects, Freshwater fishes, Frogs, Reptiles, Birds, Mammals, Grasses, sedges, ferns and fungi, Wild flowers, Trees

This practical guide describes the stage by stage development of a new method for predicting the penetration rate (PR) and the advance rate (AR) for tunnel boring machines based on an expanded version of the Q-value, Qtbm.The book also looks at logging methods and tunnel support design.