| Views | |
| Environmental Science & Technology | 331 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| Environmental Science & Technology | 14 | 20 | 18 | 19 | 13 | 15 | 14 |
| Views | |
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| Unknown Country | 4 |
| Views | |
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