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| 0001437749-19-014273-index.html | 2019-07-19 14:45:10 | |
| 0001437749-19-014273.txt | 2019-07-19 14:45:10 | |
 0001437749-19-014273-xbrl.zip | 137047 | 2019-07-19 14:45:10 |
| buks-20190430.xml | 1188852 | 2019-07-19 14:45:10 |
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| buks20190331_10k.htm | 1276426 | 2019-07-19 14:45:10 |
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| ex_150059.htm | 5625 | 2019-07-19 14:45:10 |
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| ex_150369.htm | 3860 | 2019-07-19 14:45:10 |
| FilingSummary.xml | 38684 | 2019-07-19 14:45:10 |
| Financial_Report.xlsx | 61869 | 2019-07-19 14:45:10 |
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| report.css | 2767 | 2019-07-19 14:45:10 |
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