An Introduction to forest soils of the douglas-fir region of the pacific northwest

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Soil organic matter key to sustainable soils 由 Rajan, A. Raja

主题: “...Factors affecting soil organic matter; Quantity of organic matter;...”

Elements of soil science 由 Kelkar, A.S

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Sustainable management of soil organic matter

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Biofertilizers in agriculture and forestry 由 Rao, N.S. Subba

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Non-symbiotic nitrogen fixation organic matter tropics: symposia papers I : proceedings

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Biofertilizers in agriculture and forestry 由 Rao, N.S. Subba

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Soil microorganisms and crop growth

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Soil microorganism and crop growth

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Soil chemistry 由 Bohn, Hinrich L.

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Soil organic carbon inventory of Uttarakhand 由 Gupta, M.K

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Carbon stock in India's forests

主题: “...carbon and climate change Biomass, carbon pools Forest carbon stock Soil organic matter,...”