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by Charles Darwin
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Soils of the eastern United States and their use--
Jay Allan Bonsteel
The formation of vegetable mould, through the action of worms
Charles Darwin
The formation of vegetable mould through the action of worms, with observations on their habits
Charles Darwin
The formation of vegetable mould
Charles Darwin
Structure and organic matter storage in agricultural soils
Martin R. Carter
Geotechnics of Organic Soils and Peat
Bujang B. K. Huat
Humic substances of soils and general theory of humification
D. S. Orlov
An agricultural testament
Howard, Albert Sir
Membrane-micelle model for humus in soils and sediments and its relation to humification
R. L. Wershaw
Humic Matter in Soil and the Environment
Kim H. Tan