This publication is a summary of good practice on the use of rock in engineering works for rivers, coasts and seas. It has incorporated all the significant advances in knowledge that have occured over the past 10-15 years.

This is a thorough presentation of the basic elements of singing, including vocal production, training, breathing, posture and diet. It offers help for the aspiring rock singer, who cannot, or will not, take lessons.

This is the first authoritative reference on rock mass classification, consolidating into one handy source information once widely scattered throughout the literature. It includes new, previously unpublished material and case histories, presents the fundamental concepts of classification schemes, and critically appraises their practical application in industrial projects such as tunneling and mining.

From the leading conservation organization--the trail building and maintenance bible, now updated and expanded to meet new techniques and new realities of the 21st century. New chapters on arid lands restoration and involving conservation volunteers. The latest in effective management of work crews of all ages.

Drawing on new research in sports medicine, nutrition, and fitness, this book offers a training program to help any climber achieve superior performance and better mental concentration on the rock, with less risk of injury.