** https://sswm.info/water-nutrient-cycle/water-sources/hardwares/groundwater-sources/dug-wells**

        Presentation : **[<https://app.box.com/s/zqpupewf3z52jbfec4oqesctwu4zahug>](<https://app.box.com/s/zqpupewf3z52jbfec4oqesctwu4zahug>)**

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