http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 online resource (viii, 360 pages) : illustrations
"Errata for Keys to Soil Taxonomy, 12th edition"--P. [361].
"The twelfth edition of the Keys to Soil Taxonomy incorporates all changes approved since the publication in 1999 of the second edition of Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys."--P. vii.
Includes bibliographical references and index.