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| 0001099910-16-000327-index.html | 2016-04-05 16:06:42 | |
| 0001099910-16-000327.txt | 2016-04-05 16:06:42 | |
 0001099910-16-000327-xbrl.zip | 64580 | 2016-04-05 16:06:42 |
| evtn-20151231.xml | 311696 | 2016-04-05 16:06:42 |
| evtn-20151231.xsd | 28672 | 2016-04-05 16:06:42 |
| evtn-20151231_cal.xml | 44910 | 2016-04-05 16:06:42 |
| evtn-20151231_def.xml | 67094 | 2016-04-05 16:06:42 |
| evtn-20151231_lab.xml | 207358 | 2016-04-05 16:06:42 |
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| evtn_10k.htm | 432563 | 2016-04-05 16:06:42 |
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| ex31-2.htm | 7698 | 2016-04-05 16:06:42 |
| ex32-1.htm | 4076 | 2016-04-05 16:06:42 |
| ex32-2.htm | 4635 | 2016-04-05 16:06:42 |
| FilingSummary.xml | 27227 | 2016-04-05 16:06:42 |
| Financial_Report.xlsx | 48533 | 2016-04-05 16:06:42 |
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| report.css | 2767 | 2016-04-05 16:06:42 |
| Show.js | 1410 | 2016-04-05 16:06:42 |