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| 0000225648-19-000108-index.html | 2019-07-26 16:30:39 | |
| 0000225648-19-000108.txt | 2019-07-26 16:30:39 | |
 0000225648-19-000108-xbrl.zip | 239506 | 2019-07-26 16:30:39 |
| cva-063019x10q.htm | 1753992 | 2019-07-26 16:30:39 |
| cva-063019x10q_htm.xml | 1132479 | 2019-07-26 16:30:39 |
| cva-20190630.xsd | 48166 | 2019-07-26 16:30:39 |
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| report.css | 2767 | 2019-07-26 16:30:39 |
| Show.js | 1085 | 2019-07-26 16:30:39 |