21 | Add to Reading ListSource URL: www.cv.nctu.edu.tw- Date: 2007-09-18 22:57:02
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22 | Add to Reading ListSource URL: tpapanicolaou.engr.utk.edu- Date: 2013-01-10 13:41:18
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23 | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2015-08-26 11:38:46
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24 | Add to Reading ListSource URL: www.sandwichnh.org- Date: 2013-02-28 16:26:11
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25 | Add to Reading ListSource URL: www.tahoebmp.org- Date: 2014-06-16 17:16:55
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26 | Add to Reading ListSource URL: southeastwatershedalliance.org- Date: 2013-12-19 16:13:29
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27 | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2016-05-25 08:08:02
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28 | Add to Reading ListSource URL: www.washingtonks.net- Date: 2016-06-27 17:51:56
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29 | Add to Reading ListSource URL: edwclevy.com- Date: 2014-04-30 17:05:00
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30 | Add to Reading ListSource URL: www.alamedacreek.org- Date: 2015-03-24 13:30:10
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