http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
variations in its properties and distribution, a pedologic interpretation
pages 139-184, 1 leaf of plates : illustrations (some color), maps ; 23 cm
Includes bibliographical references (pages 183-184).
Urbana, Ill. : University of Illinois, Agricultural Experiment Station, 1942
Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) ; no. 490