This series is dedicated to serving the growing community of scholars and prac- titioners concerned with the principles and applications of enviromental manage- ment. Each volume is a thorough treatmt'nt of a specific topic of importance for proper management practices. A fundamental objective of these books is to help the reader discern and implement man's stewardship of our environment and the world's renewable resources. For we must act to bring harmony to it, and nurture an environment that is both stable and productive. These objectives have often eluded us because the pursuit of other...