This glossary is a composite of terms selected from 13 technologies, and is the expanded revision of the original 1952 edition of "The Soil and Water Conservation Glossary." The terms were selected from these areas: agronomy, biology, conservation, ecology, economics, engineering, forestry, geology, hydrology, range, recreation, soils, and watersheds. Definitions vary in length from one to five or more sentences, and are intended to serve as a reference for professionals and laymen as well as students. (PR)