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Graph showing how the price of zinc have changed over the last ten years. Graph by juk Bhattacharyya, University of Wisconsin-Whitewater, based on data from USGS Mineral Information (
Originally uploaded in Integrate:Teaching for Sustainability:InTeGrate Modules:Humans' Dependence on Earth's Mineral Resources.

Image 43843 is a 720 by 960 pixel WebP
Uploaded: Mar2 14

Last Modified: 2014-08-25 12:42:46
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PRAJUKTI Bhattacharyya, University of Wisconsin-Whitewater
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