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Computer and Scientific
Owner
CONVENTION LIAISON COUNCIL, INC.
Dec 19, 1989
Computer and Scientific
Owner
CONVENTION LIAISON COUNCIL, INC.
Jan 2, 1990
Computer and Scientific
Owner
CONVENTION LIAISON COUNCIL, INC.
May 15, 1990
Computer and Scientific
Owner
CONVENTION LIAISON COUNCIL, INC.
Apr 26, 1988
Education and Entertainment
Owner
CONVENTION LIAISON COUNCIL, INC.
Dec 30, 1986