| http://www.w3.org/ns/prov#value | - Better use of resources and changing global supply patterns played an important part.The latest twist in the tale is a report commissioned by the International Fertilizer Development Center (IFDC): this report analysed publicly available information to come up with an estimate of reserves that is about four times that of the USGS. The report authored by geologist Steven Van Kauwenbergh, while ment
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