Since the International Institute for Applied Systems Analysis began its study of water quality modeling and management in 1977, it has been interested in the r

This book is open access under a CC BY-NC 4.0 license. This revised, updated textbook presents a systems approach to the planning, management, and operation of

During 1978-1982 the International Institute for Applied Systems Analysis (IIASA) was responsible for a research project on Environmental Quality Control and Ma