271![](https://www.pdfsearch.io/img/89684db81988776028d58d649be9fd48.jpg) | Add to Reading ListSource URL: www.htracyhall.orgLanguage: English - Date: 2010-12-09 18:41:35
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272![](https://www.pdfsearch.io/img/939729c14ea7c22ff5b358e8066fae1d.jpg) | Add to Reading ListSource URL: www.chem.ucalgary.caLanguage: English - Date: 2013-08-28 14:09:36
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273![](https://www.pdfsearch.io/img/f8e9d0d95182f16764096c239107b051.jpg) | Add to Reading ListSource URL: cameochemicals.noaa.govLanguage: English - Date: 2013-04-08 18:37:23
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274![](https://www.pdfsearch.io/img/b393a19cd5706c46f89636b1dee14324.jpg) | Add to Reading ListSource URL: fisica.ciencias.uchile.clLanguage: English - Date: 2009-04-09 15:20:07
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275![](https://www.pdfsearch.io/img/94e6307dbfc58e7f6a8bebc45a15b135.jpg) | Add to Reading ListSource URL: www.netl.doe.govLanguage: English - Date: 2013-07-10 20:15:04
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276![](https://www.pdfsearch.io/img/ec25d78510649f4c16759372c7616a04.jpg) | Add to Reading ListSource URL: www.permanente.netLanguage: English - Date: 2010-04-13 17:06:10
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277![](https://www.pdfsearch.io/img/6e593b9fc1c526228208d687c7d6dd6a.jpg) | Add to Reading ListSource URL: giantcrystals.strahlen.orgLanguage: English - Date: 2007-07-03 11:19:51
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