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- Humus
- Soils 36
- Humic acid 15
- Earthworms 12
- Humic acid content 11
- Soil chemistry 11
- Soil ecology 10
- Environmental aspects 9
- Soil management 7
- Forest soils 5
- Humification 5
- Soil biochemistry 5
- Biodegradation 4
- Crops and soils 4
- Environmental Sciences 4
- Soil fertility 4
- Soil formation 4
- Soil productivity 4
- Testing 4
- Water 4
- Water chemistry 4
- Analysis 3
- CU Boulder 3
- Freshwater ecology 3
- Organic fertilizers 3
- Peat 3
- Soil microbiology 3
- Soil science 3
- Sustainable agriculture 3
- Bioorganic chemistry 2
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Humic substances of soils and general theory of humification D.S. Orlov.
Published 2020Full Text (via Taylor & Francis)
Electronic eBook -
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Humic substances : molecular details and applications in land and water conservation / edited by Elham A. Ghabbour, Geoffrey Davies.
Published 2005Publisher description
Conference Proceeding Book -
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Soil organic matter in sustainable agriculture edited by Fred Magdoff, Ray R. Weil.
Published 2004Full Text (via Taylor & Francis)
Electronic eBook -
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Soil organic matter edited by M. Schnitzer and S.U. Khan.
Published 1978Full Text (via ScienceDirect)
Electronic eBook -
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Soils of the eastern United States and their use-- : XXXVIII, Muck and peat / by Jay A. Bonsteel.
Published 1912Government Document Book -
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Humic substances : versatile components of plants, soil and water / edited by Elham A. Ghabbour, Geoffrey Davies.
Published 2000Conference Proceeding Book -
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Membrane-micelle model for humus in soils and sediments and its relation to humification by Robert L. Wershaw.
Published 1992Government Document Microfilm Book