http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
[4], 60 pages illustrations, 4 plates, tables, diagrams 23 cm
The soil environment. Organisms and their ecology. Methods of study. Soil organisms and nutrient cycles.
Includes bibliographical references (page 60).
Institute of Biology's studies in biology ; no. 2