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Subjects
Humus, Soils, Soil chemistry, Agriculture, Composition, Humic acid, Agriculture (General), Altaĭskai︠a︡ gosudarstvennai︠a︡ akademii︠a︡ obrazovanii︠a︡ imeni V.M. Shukshina, Biosphere, Boden, Bodenchemie, Chimie, Economic aspects, Economic aspects of Agriculture, Economic conditions, Education, Farm economics. Farm management. Agricultural mathematics, Higher Education, History, Humic acid content, Humic content, Humification, Huminsäuren, Local history, MethodologyTime
20th centuryID Numbers
- OLID: OL425161A
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September 2, 2008 | Edited by RenameBot | fix author name |
April 1, 2008 | Created by an anonymous user | initial import |