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US Army Corps of Engineers	University Press of the Pacific
	Australian Journal of Soil Research

Verkaik, Eric 2006 , "Short-term and long-term effects of tannins on nitrogen mineralisation and litter decomposition in kauri Agathis australis D.

مكونات التربة , مما تتكون التربه: Essentials of Soil Mechanics and Foundations• "Exploring pedogenesis via nuclide-based soil production rates and OSL-based bioturbation rates"
التربه تتكون من: "The role of pedogenic overprinting in the obliteration of parent material in some polygenetic landscapes of Sicily Italy "
اختر الإجابة الصحيحة مما يلي تتكون التربة من: Drainage Manual: A Guide to Integrating Plant, Soil, and Water Relationships for Drainage of Irrigated Lands

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