• 3.- WATER DISTRIBUTION - 3.2. Distribution pipes and channels —> 3.2.2. Trenches.

           **[<https://sswm.info/water-nutrient-cycle/water-distribution/hardwares/distribution-pipes-and-channels/trenches>](<https://sswm.info/water-nutrient-cycle/water-distribution/hardwares/distribution-pipes-and-channels/trenches>)**
  

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