Major trade and professional publication, online & related business information acquisitions, third quarter 2003.

MAJOR TRADE AND PROFESSIONAL PUBLICATION, ONLINE & RELATED
BUSINESS INFORMATION ACQUISITIONS, THIRD QUARTER 2003

Publication/Property      Buyer                  Seller

Medical Economics Gp.     Advanstar Comm./       Thomson Corp./
including Medical         New York               Toronto, ON
Economics, Patient
Care and six other
medical titles;

Dental Products Gp.
including Dental
Products Report and
four other dental
magazines; and,

Veterinary Gp.
including Veterinary
Economics and
Veterinary Medicine

NJ/PA Real Estate         Christman, Linda/      management/
Journal                   Norwell, MA            Norwell, MA

Thoemmes Press            CIP Group/New York     management/
                                                 Dorset, UK

Asphalt Contractor        Cygnus Business/       Mercor Media/
                          Westport, CT           Chicago, IL

Officer.com               Cygnus Business/       management/
                          Westport, CT           Boston, MA

Modern Learning Press     Delta Education/       TASA/Brewster, NY
                          Nashua, NH

Motion Control            Douglas Publ./         ISA/Res. Triangle
                          Richmond, VA           Park, NC

Technologic Partners      Dow Jones/New York     management/New York

Adams Media Corp.         F&W Publ./             management/Avon, MA
                          Cincinnati, OH

Pastel Journal            F&W Publ./             management/
                          Cincinnati, OH         Corrales, NM

MutliMedia Healthcare/    Freedom Comm./         management/
Freedom (remaining        Irvine, CA             Plainsboro, NJ
49%), including
Annals of Long-Term
Care, four other
titles, a newsletter
and various
related programs

Educational Planning      HCPro/Marblehead, MA   management/Yarmouth
Services Corp.                                   Port, ME

"XML Web Services" show   Infoconomy/London      101comm./
                                                 Los Angeles, CA

MMS Group                 Informa/London         management/New York

ArtToday, Inc.            Jupitermedia/          IMS/Novato, CA
                          Darien, CT

DevX.com                  Jupitermedia/          management/Mountain
                          Darien, CT             View, CA

Pinnacor, Inc.            Marketwatch.com/       management/New York
                          San Fran., CA

eAttorney                 Mart.-Hubbell/         management/
                          New Prov., NJ          Atlanta, GA

NetCrawling S.A.          NetRatings/New York    management/London

LessonLab Inc.            Pearson Ed./Upper      management/Santa
                          Saddle                 Barbara, CA
                          River, NJ

SIRS Publishing           ProQuest Co./Ann       management/Boca
                          Arbor, MI              Raton, FL

Truckers News             Randall Publ./         NATSO/Alexandria, VA
                          Tuscaloosa, AL

Simba Information         R.R. Bowker/New        Primedia/New York
including seven           Prov., NJ
newsletters, and
confererences and
forums

Texere                    South-Western/         management/New York
                          Mason, OH

Frank Cass & Co.          Taylor & Francis/      management/London
                          London, N.Y.

Information Security      TechTarget/            TruSecure/Herndon, VA
                          Needham, MA

TechStreet, Inc.          Thomson Scientific/    management/
                          Phil., PA              Ann Arbor, MI

The Builder Group         United Bus. Media/     Approvia/Windsor, UK
including Building,       London
Construction Manager
and eight other
business magazines

Medical Ed. Consultants   Wicks Med. Info./      management/
                          New York               Westport, CT

Baker & Taylor            Willis Stein/          Carlyle Gp./Wash.,
                          Chicago, IL            D.C.

Who's Who directories     W.L. Ross & Co./       Reed Elsevier/
                          Chicago, IL            New Prov., NJ

"Linux Expo"              XPO Events/London      101comm./Los Angeles,
                                                 CA
Titles in bold are magazine or journals