USGS (s.f.):
https://water.usgs.gov/edu/watercycle.html
U.S. Geological Survey (USGS).
[Visita: 08.05.2018]
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Explore Perspectives
What is a perspective?
Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
