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| 0000051644-20-000045-index.html | 2020-07-31 08:44:55 | |
| 0000051644-20-000045.txt | 2020-07-31 08:44:55 | |
 0000051644-20-000045-xbrl.zip | 317919 | 2020-07-31 08:44:55 |
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| ipgq2202010q.htm | 2570015 | 2020-07-31 08:44:55 |
| ipgq2202010qex311.htm | 12322 | 2020-07-31 08:44:55 |
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| report.css | 2767 | 2020-07-31 08:44:55 |
| Show.js | 1085 | 2020-07-31 08:44:55 |