Chris Johnson

Of the forty mammal species known to have vanished in the world in the last 200 years, almost half have been Australian. Our continent has the worst record of mammal extinctions, with over 65 mammal species having vanished in the last 50 000 years. It began with the great wave of megafauna extinctions in the last ice-age, and continues today, with many mammal species vulnerable to extinction. The question of why mammals became extinct, and why so many became extinct in Australia has been debated by experts for over a century and a half and we are no closer to agreement on the causes. This book introduces readers to the great mammal extinction debate. Chris Johnson takes us on a detective-like tour of these extinctions, uncovering how, why and when they occurred.

This book is geared towards any Unix user who doesn't want to spend time creating or testing shell scripts. Instead, Shell Scripting Recipes dissects and explains over 150 much-needed and practical real-world examples, and then shows the reader how and when to appropriately use them. Because most scripts found in this book are POSIX (Portable Operating System Interface)-compliant, they are supported by many of the major shell variants, including Bash, ksh and sh, among others. File conversion, system administration, and resource monitoring are just a few of the topics covered in this highly practical shell scripting reference.

This outstanding series provides concise and lively introductions to countries and the major development issues they face. Packed full of factual information, photographs and maps, the guides also focus on ordinary people and the impact that historical, economic and environmental issues have on their lives.

"The Art of Violin Making" is the major work for the craftsman, bringing into one volume a summary of essential information for the violin maker and player, as well as providing a historical reference. Part One: The Violin Makers is devoted to separate chapters on the life and work of some of the greatest of all violin makers; the families of Amati, Stradivari and Guarneri, and the unique genius of Jacob Stainer. These chapters include superb colour photographs of examples of their work. Also included is a chapter covering the work of some leading contemporary violin makers. Part Two: The Workshop, Tools and Materials provides essential information on the tools, working environment and material needed by violin makers. Part Three: Violin Construction comprises a detailed, step-by-step guide to the traditional method of violin making, based closely on the teaching system employed at the world-famous Newark School of Violin Making in England.