Computer and Scientific

Owner

SCIENCE FOR PROFESSIONALS, INC.

Dec 21, 1999

Computer and Scientific

Owner

SCIENCE FOR PROFESSIONALS, INC.

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Computer and Scientific

Owner

SCIENCE FOR PROFESSIONALS, INC.

—

Advertising and Business

Owner

SCIENCE FOR PROFESSIONALS, INC.

Sep 22, 1998

Education and Entertainment

Owner

SCIENCE FOR PROFESSIONALS, INC.

Apr 16, 1996

Education and Entertainment

Owner

SCIENCE FOR PROFESSIONALS, INC.

Jul 16, 1996

Electrical and Scientific Apparatus

Owner

SCIENCE FOR PROFESSIONALS, INC.

Oct 8, 1996

Electrical and Scientific Apparatus

Owner

SCIENCE FOR PROFESSIONALS, INC.

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Paper Goods and Printed Matter

Owner

SCIENCE FOR PROFESSIONALS, INC.

—

Paper Goods and Printed Matter

Owner

SCIENCE FOR PROFESSIONALS, INC.

May 21, 1996