41![](https://www.pdfsearch.io/img/3abcaf61b8a9f8ce73945d999ad3e58c.jpg) | Add to Reading ListSource URL: www.scielo.brLanguage: English - Date: 2011-02-18 12:48:00
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42![](https://www.pdfsearch.io/img/d43227f6c5d19bd4d4466ddb4fc48e17.jpg) | Add to Reading ListSource URL: www.scielo.brLanguage: English - Date: 2010-11-10 08:49:00
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43![](https://www.pdfsearch.io/img/4272ca0e19c9aa25cbc237f571738dbc.jpg) | Add to Reading ListSource URL: www.scielo.brLanguage: English - Date: 2011-11-29 10:35:49
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44![](https://www.pdfsearch.io/img/4d36c930a3369c3d3fe5a78d2009c5d8.jpg) | Add to Reading ListSource URL: www.miketaylor.org.ukLanguage: English - Date: 2012-07-17 07:22:00
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45![](https://www.pdfsearch.io/img/e82414fdc1c05ac6588d6b9d954a0500.jpg) | Add to Reading ListSource URL: www.app.pan.plLanguage: English - Date: 2005-11-04 07:57:40
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46![](https://www.pdfsearch.io/img/f2a21f39873702f9f046c0b089cf1d5e.jpg) | Add to Reading ListSource URL: calteches.library.caltech.eduLanguage: English - Date: 2012-12-26 00:09:39
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47![](https://www.pdfsearch.io/img/e982f8a5ae9c0b460f57c675637c6713.jpg) | Add to Reading ListSource URL: www.geol.umd.eduLanguage: English - Date: 2011-01-28 17:07:05
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48![](https://www.pdfsearch.io/img/c3e42e43335fce6c6a25ea8ae2f52321.jpg) | Add to Reading ListSource URL: www.geol.umd.eduLanguage: English - Date: 2008-08-01 08:17:10
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49![](https://www.pdfsearch.io/img/b35d50d5d01febf9b14f9b9623010870.jpg) | Add to Reading ListSource URL: webhost.ua.ac.beLanguage: English - Date: 2007-09-08 09:37:42
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50![](https://www.pdfsearch.io/img/7d73996895b46712477e03ec97f50733.jpg) | Add to Reading ListSource URL: www.levenspiel.comLanguage: English - Date: 2010-07-09 18:14:45
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