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| 0001193125-11-052349-index.html | 2011-03-01 17:12:04 | |
| 0001193125-11-052349.txt | 2011-03-01 17:12:04 | |
 0001193125-11-052349-xbrl.zip | 411954 | 2011-03-01 17:12:04 |
| chk-20101231.xml | 4963215 | 2011-03-01 17:12:04 |
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