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| 0000051548-18-000018-index.html | 2018-04-03 16:13:22 | |
| 0000051548-18-000018.txt | 2018-04-03 16:13:22 | |
 0000051548-18-000018-xbrl.zip | 129349 | 2018-04-03 16:13:22 |
| a228201810-q.htm | 869334 | 2018-04-03 16:13:22 |
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| ex322282018.htm | 6268 | 2018-04-03 16:13:22 |
| FilingSummary.xml | 27469 | 2018-04-03 16:13:22 |
| Financial_Report.xlsx | 52826 | 2018-04-03 16:13:22 |
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| isca-20180228.xsd | 40736 | 2018-04-03 16:13:22 |
| isca-20180228_cal.xml | 62653 | 2018-04-03 16:13:22 |
| isca-20180228_def.xml | 171557 | 2018-04-03 16:13:22 |
| isca-20180228_lab.xml | 446076 | 2018-04-03 16:13:22 |
| isca-20180228_pre.xml | 259027 | 2018-04-03 16:13:22 |
 isclogoa01a05.jpg | 10605 | 2018-04-03 16:13:22 |
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| report.css | 2767 | 2018-04-03 16:13:22 |
| Show.js | 1410 | 2018-04-03 16:13:22 |