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4/AAccepted Jan 18, 10:17 AM ET

BARRETT WILLIAM J 4/A

DWSNDAWSON GEOPHYSICAL CO

sec.gov(opens the filing on sec.gov)

Accepted (ET)

10:17 AM

Jan 18, 2019

Filed

Jan 18, 2019

Documents

1

Size

7.5 KB

Summary

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