Chapter 1. Introduction. Part A.- Principles of Environmental Science. 2. Mass Conservation. 3. Principles of Energy Behaviour Applied to Environmental Issues. 4. Ecological Principles and Concepts. 5. An Overview of the Major Environmental Problems of Today. Part B. Principles of Environmental Technology. 6. Water and Waste Water Problems. 7. The Solid Waste Problems. 8. Air Pollution Problems. 9. Examination of Pollution. Appendices. References. Index.