BUCKINGHAM, D.A. JASINSKI, S.M.
(2006):
Phosphate Rock Statistics, Historical Statistics for Mineral and Material Commodities in the United States, Data Series 140 US Geological Survey minerals.
Reston:
U.S Geological Survey
URL
[Accessed: 20.01.2011]
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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.
