251 | Add to Reading ListSource URL: dec.alaska.govLanguage: English - Date: 2014-11-24 20:58:53
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252 | Add to Reading ListSource URL: www.astm.orgLanguage: English - Date: 2008-01-17 11:51:20
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253 | Add to Reading ListSource URL: www.oilgard.comLanguage: English - Date: 2013-09-06 11:32:24
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254 | Add to Reading ListSource URL: prod-images.exhibit-e.comLanguage: English - Date: 2012-04-24 20:31:50
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255 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-10-16 17:42:04
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256 | Add to Reading ListSource URL: www.astm.orgLanguage: English - Date: 2008-01-17 11:51:20
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257 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-18 15:38:48
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258 | Add to Reading ListSource URL: www.puc.state.pa.usLanguage: English - Date: 2014-11-17 12:32:45
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259 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-15 15:44:12
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260 | Add to Reading ListSource URL: www.dnr.mo.govLanguage: English - Date: 2007-08-20 18:05:48
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