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| 0001564590-16-019720-index.html | 2016-05-19 16:01:39 | |
| 0001564590-16-019720.txt | 2016-05-19 16:01:39 | |
| extr-8k_20160514.htm | 34937 | 2016-05-19 16:01:39 |
| extr-ex101_54.htm | 36636 | 2016-05-19 16:01:39 |
| extr-ex102_16.htm | 120601 | 2016-05-19 16:01:39 |
| extr-ex991_6.htm | 14944 | 2016-05-19 16:01:39 |
 gj3qgfsurznf000001.jpg | 3674 | 2016-05-19 16:01:39 |