1 - Facilitating access to water - 1.6. Distributing.

1.6.19. ( E46 ) - The construction of gravity networks from springs or high-up expanses of water.

https://wikiwater.fr/e46-construction-of-gravitary

https://app.box.com/s/7rqr7002xnx5dxf66xi7zcyj3hs20imp

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