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current | 21:30, 21 August 2013 | 750 × 580 (8 KB) | Con-struct | 2012 update | |
11:11, 4 August 2007 | 676 × 451 (10 KB) | Leyo | {{Information |Description= {{en|World production trend of zirconium mineral concentrates (in tons per year)}} |Source= [http://minerals.usgs.gov U.S. Geological Survey] |Date= August 2007 |Author= Leyo |Permission= {{PD-USGov}} |other_versi |
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