Supplement to Soil classification system (7th approximation)
Contributors: United States. Soil Conservation Service.
Publisher: Soil Conservation Service, U.S. Dept. of Agriculture
Published: 1967
Place of publication: [Washington, D.C.]
Language: eng
Number of pages: 207
Subjects: Soils -- Classification
Genres: Classification
Other titles: Soil classification system
Notes: Includes index.