This dictionary contains in English, German, and French the terms used in the fields of water chemistry and water pollution. It also includes technical terms related to physicochemical, geological, and biological matters. The dictionary consists of three sections, each of which provides the equivalents of a given term in the other two languages. The book should be of great value to all who work on international commissions, who use foreign language research, or who are involved in international regulations and the standardization of methods of monitoring water quality.