The main items dealt with in the monograph are: practice and problems, collection and transport, treatment and processes, thermology, re-use and regenerative processes, and construction and operation. (Author).

This comprehensive book presents in a clear and informative way the basic principles of biological wastewater treatment, including theory and practice, and covering conception, design and operation. In order to ensure the practical and didactic view of the book, 371 illustrations, 322 summary tables and 117 examples are included. All major wastewater treatment processes are covered by full and interlinked design examples which are built up throughout the book, from the determination of wastewater characteristics, the impact of discharge into rivers and lakes, the design of several wastewater treatment processes and the design of sludge treatment and disposal units.

The main items dealt with in the monograph are: practice and problems, collection and transport, treatment and processes, thermology, re-use and regenerative processes, and construction and operation. (Author).

The types of stresses imposed by military activities on the environment are not well known, nor is it possible in most cases to quantify or predict the impact of stresses on a long term basis. A research program is currently being formulated to correct this deficiency. The report was prepared as a preliminary step to identifying research problems which arise as a special consequence of military facilities in cold regions. The subjects discussed include: air pollution(Ice fog); Terrain impacts(Erosion); Permafrost; and Water pollution.

"This manual contains overview information on treatment technologies, installation practices, and past performance."--Introduction.

comprehensively up to date. We are most grateful to these authors and to those we recruited to write the additional chapters necessary to fill the significant gaps. We acknowledge also the sacrifice of some who presented results of original research and have thus suffered a longer time than usual to publication. The timing of publication however has provided the opportunity to highlight recent discussions and resolutions made within the Antarctic Treaty forum to protect wildlife against disease and to include responses by Government and non-Government operators in Antarctica. These developments mostly followed from the Workshop on Diseases of Antarctic Wildlife. The book comprises 17 chapters presented in two parts. Wildlife disease consists of reviews, case studies and health assessments, and External factors covers the environmental, administrative and legal aspects. Each chapter is complete and c- tains all references. Six important documents are provided as Appendices. These present methods, reviews and other documents which are referred to in one or more chapters but are not readily available. There are many related topics we have been unable to cover that would enhance the understanding of health and disease processes in Antarctica. While we ackno- edge their importance they are outside the scope of the present volume. Such topics include epidemiology, new and emerging infectious diseases and the effects of climate change. These topics are referred to in the various chapters where ref- ences to source material are given.