வெட்டிக் கரியாக்கல் (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "வெட்டிக் கரியாக்கல்" in Tamil language version.

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Biederman, L. A. (2012-12-31). "Biochar and its effects on plant productivity and nutrient cycling: a meta-analysis" (in en). GCB Bioenergy 5 (2): 202–214. doi:10.1111/gcbb.12037.
Niu, Li-qin; Jia, Pu; Li, Shao-peng; Kuang, Jia-liang; He, Xiao-xin; Zhou, Wen-hua; Liao, Bin; Shu, Wen-sheng et al. (October 2015). "Slash-and-char: An ancient agricultural technique holds new promise for management of soils contaminated by Cd, Pb and Zn" (in en). Environmental Pollution 205: 333–339. doi:10.1016/j.envpol.2015.06.017. https://linkinghub.elsevier.com/retrieve/pii/S0269749115003103.