Alt-Tech 146 Soil Science History of the Old World

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Chesworth, W., Perez-Alberti, A., & Arnaud, E. (2008). Ice erosion. Encyclopedia of Earth Sciences Series, 333–338. https://doi.org/10.1007/978-1-4020-3995-9_282
Nath, B. V. (1940). A century of Liebig’s theory of mineral nutrition of plants and of soil fertility. Current Science, 9(12), 529–532. Retrieved from https://www.jstor.org/stable/24208605

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