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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000902219-99-000263
Filing Date
1999-02-09
Accepted
1999-02-09 00:00:00
Documents
1

Document Format Files

Seq Description Document Type Size
1 13G FILING SC 13G/A 7401
  Complete submission text file 0000902219-99-000263.txt   9414
Mailing Address 208 SOUTH MARIENFELD MIDLAND TX 79701
Business Address 208 S MARIENFELD MIDLAND TX 79701 9156827356
DAWSON GEOPHYSICAL CO (Subject) CIK: 0000351231 (see all company filings)

IRS No.: 750970548 | State of Incorp.: TX | Fiscal Year End: 0930
Type: SC 13G/A | Act: 34 | File No.: 005-39364 | Film No.: 99525616
SIC: 1382 Oil & Gas Field Exploration Services

Mailing Address 75 STATE STREET BOSTON MA 02109
Business Address 75 STATE STREET BOSTON MA 02109 6179515000
WELLINGTON MANAGEMENT CO LLP (Filed by) CIK: 0000902219 (see all company filings)

IRS No.: 042683227 | State of Incorp.: MA | Fiscal Year End: 1231
SIC: 0000