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The wetlands of the Polish Polissya zone in previous centuries had a negative impact on the economic development of the region and were an obstacle to social transformation. Even in ancient times, humans were aware of the need for drainage measures, as evidenced by archaeological excavations and traces of preserved reclamation works dating back a thousand years. Unfortunately, little has survived testifying to the scale of hydro melioration until the second half of the 18th century. The Handbook of Research on Improving the Natural and Ecological Conditions of the Polesie Zone considers the results of many years of research and the production experience of leading scientists and specialists of the water management and melioration profile regarding natural, historical, social, economic, constructive, regime-technological, ecological, economic, and other aspects of land reclamation and development of the Polissya zone. Covering key topics such as water treatment, ecology, nature conservation, and environmental science, this premier reference source is ideal for industry professionals, researchers, academicians, practitioners, scholars, instructors, and students.