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hungeobull-4230	doi.org	https://doi.org/10.1111/ejss.12553
hungeobull-4230	doi.org	https://doi.org/10.1016/j.isprsjprs.2018.11.026
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hungeobull-4230	doi.org	https://doi.org/10.1002
hungeobull-4230	doi.org	https://doi.org/10.1016/j.geoderma.2019.113896
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hungeobull-4230	doi.org	https://doi.org/10.1016/j.geoderma.2012.05.023
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hungeobull-4230	doi.org	https://doi.org/10.1016
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hungeobull-4230	www.r-studio.com	http://www.r-studio.com
hungeobull-4230	doi.org	https://doi.org/10.5194/bg-11-3299-2014
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hungeobull-4230	doi.org	https://doi.org/10.1016/j.rsase.2017.10.005
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hungeobull-4230	doi.org	https://doi.org/10.29133/yyutbd.754479
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hungeobull-4230	doi.org	https://doi.org/10.1016/0034-4257(79)90013-0
hungeobull-4230	doi.org	https://doi.org/10.1016/j
hungeobull-4230	doi.org	https://doi.org/10.3390/rs5083826
hungeobull-4230	doi.org	https://doi.org/10.1016/j