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|---|---|---|
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| 0001099910-19-000036-index.html | 2019-05-15 17:09:19 | |
| 0001099910-19-000036.txt | 2019-05-15 17:09:19 | |
 0001099910-19-000036-xbrl.zip | 68847 | 2019-05-15 17:09:19 |
| evtn-20190331.xml | 322971 | 2019-05-15 17:09:19 |
| evtn-20190331.xsd | 24580 | 2019-05-15 17:09:19 |
| evtn-20190331_cal.xml | 42469 | 2019-05-15 17:09:19 |
| evtn-20190331_def.xml | 69883 | 2019-05-15 17:09:19 |
| evtn-20190331_lab.xml | 208267 | 2019-05-15 17:09:19 |
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| evtn_10q.htm | 272980 | 2019-05-15 17:09:19 |
| ex31-1.htm | 9679 | 2019-05-15 17:09:19 |
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| ex32-1.htm | 3621 | 2019-05-15 17:09:19 |
| FilingSummary.xml | 22504 | 2019-05-15 17:09:19 |
| Financial_Report.xlsx | 44611 | 2019-05-15 17:09:19 |
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| R9.htm | 41834 | 2019-05-15 17:09:19 |
| report.css | 2767 | 2019-05-15 17:09:19 |
| Show.js | 1085 | 2019-05-15 17:09:19 |