Congreves, K. A.; Smith, J. M.; Németh, D. D.; Hooker, D.; Van Eerd, L. L. (2014). "Soil organic carbon and land use: Processes and potential in Ontario's long-term agro-ecosystem research sites". Canadian Journal of Soil Science. 94 (3): 317–336. doi:10.4141/cjss2013-094. hdl:10214/21250.
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Congreves, K. A.; Smith, J. M.; Németh, D. D.; Hooker, D.; Van Eerd, L. L. (2014). "Soil organic carbon and land use: Processes and potential in Ontario's long-term agro-ecosystem research sites". Canadian Journal of Soil Science. 94 (3): 317–336. doi:10.4141/cjss2013-094. hdl:10214/21250.