GEOSCIENCE CORP

Q: Sep 30 1999

Q: Jun 30 1999

Q: Mar 31 1999

FY: Dec 31 1998

Q: Oct 30 1998

Q: Jun 30 1998

Q: Mar 31 1998

FY: Dec 31 1997

Q: Sep 30 1997

Q: Mar 31 1997

Q: Jun 30 1997

Q: Jun 30 1997

Q: Mar 31 1997

FY: Dec 31 1996

Q: Sep 30 1996

Q: Aug 14 1996

5,7

5,7

5,7

5,7

2,5,7

5,7

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

No description available

Prospectus Supplement for Primary Offering

No description available

Amended Initial Registration Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

GENERAL GEOPHYSICS CO

GENERAL GEOPHYSICS CO

GEOSCIENCE CORP

GENERAL GEOPHYSICS CO

GENERAL GEOPHYSICS CO

GENERAL GEOPHYSICS CO

GEOSCIENCE CORP

GENERAL GEOPHYSICS CO

TECH SYM CORP