21 | Add to Reading ListSource URL: thewalrus.caLanguage: English - Date: 2016-07-22 12:25:08
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22 | Add to Reading ListSource URL: polarbearscience.files.wordpress.comLanguage: English - Date: 2014-10-04 11:36:28
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23 | Add to Reading ListSource URL: www.theupsideofdown.comLanguage: English - Date: 2013-10-29 17:30:51
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24 | Add to Reading ListSource URL: walrus.wr.usgs.gov- Date: 2015-12-18 14:28:05
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25 | Add to Reading ListSource URL: pubs.aina.ucalgary.caLanguage: English - Date: 2005-06-13 17:45:19
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26 | Add to Reading ListSource URL: walrus.wr.usgs.govLanguage: English - Date: 2016-05-12 15:14:55
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27 | Add to Reading ListSource URL: walrus.wr.usgs.govLanguage: English - Date: 2016-06-24 15:58:55
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28 | Add to Reading ListSource URL: www.biologicaldiversity.orgLanguage: English - Date: 2016-03-19 14:21:10
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29 | Add to Reading ListSource URL: walrus.wr.usgs.govLanguage: English - Date: 2016-01-19 20:18:59
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30 | Add to Reading ListSource URL: polarbearscience.files.wordpress.comLanguage: English - Date: 2016-08-02 12:55:13
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