New in paperback. Hardcover was published in 2012. It defines a comprehensive set of over 3700 words used across these fields to help policy makers, students, and professionals achieve a holistic view of environmental issues. The Dictionary also features: introductory primers to major topic areas; recommended reading for particular topics and specific words or concepts; and seven appendices, including a catalog of scientific symbols, units, and conversions, as well as an expansive listing and description of selected environmental treaties.