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world.time.com/...at-if-the-worlds-soil-runs-out soil agriculture soil_degradation soil_erosion
This is an interesting article for my class' work on Soil degradation!
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sites.asiasociety.org/...lessons-of-loess-plateau china soil loess_plateau
www.new-ag.info/...focusItem.php china soil loess_plateau
www.ifpri.org/...focus19_05.pdf china soil loess_plateau
www.youtube.com/watch china soil loess_plateau
china soil loess_plateau
Jennifer Thompson
6 items | 33 visits
Updated on Oct 17, 13 Created on Oct 17, 13
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