Major trade and professional publication, online & related business information acquisitions, first quarter 2004.

MAJOR TRADE AND PROFESSIONAL PUBLICATION, ONLINE & RELATED
BUSINESS INFORMATION ACQUISITIONS, FIRST QUARTER 2004

Publication/Property             Buyer                    Seller

Inst. of Validation Tech.        Advanstar Comm./         management/
   J. of Validation Technology*  Clev., OH                  Palm Beach,
   J. of GXP Compliance,*         books & conferences                FL

Building Systems Magazine*       AIM/E1 Segundo, CA       Home Buyer
   and two related consumer magazines                       Publishing/
                                                             Chantilly,
                                                                     VA

Centaur Communications           Centaur Holdings/London  VS&A Comm.
   Marketing Week, The Lawyer,*                               Partners/
   20 other magazines and related books and shows              New York

EDventure Holdings               CNET/San Francisco, CA   management/
                                                               New York

WGR Media                        CNET/San Francisco, CA   management/
                                                             Cambridge,
                                                                     MA

Inst. of Canadian Bankers        Delmar Learning/         CBA/
                                      Albany, NY              Montreal,
                                                                     PQ

Alternative Investor Gp.         Dow Jones/New York       Wicks Bus.
   Private Equity Analyst*                                        Info/
   three other NLs, four directories & eight conferences      Westport,
                                                                     CT

vwd GmbH news business           Dow Jones/New York       vwd/
                                                              Franfurt,
                                                                   Ger.

Home & Land*                     Endurance Business       Prince
   Rental Guide*                      Media/Atlanta, GA          Comm./
   Home Guide and Estates & Homes*                         Tallahassee,
                                                                     FL

Pulliam Group                    ETS/Princeton, NJ        management/
                                                          Redlands, CA

Information Management           Euromoney Institutional  management/
   Network (80%)                      Investor/London          New York

Glasser LegalWorks               FindLaw/Mountain View,   management/
                                      CA                         Little
                                                              Falls, NJ

Octane*                          Fulcrum Publ./Toronto,   JuneWarren
                                      ON                         Publ./
                                                            Calgary, AB

Commercial Aviation Today*       GCW Consulting/          management/
                                      Arlington, VA          Arlington,
                                                                     VA

Zynx Health, Inc.                Hearst Bus. Media/       Cerner
                                      New York             Corp./Kansas
                                                               City, MO

Taylor & Francis                 Informa Gp./London       shareholders/
   including CRC Press, Marcel Dekker,                           London
   Martin Dunitz and 11 other operating units

FiberArts*                       Interweave Press/        Sterling
                                      Loveland, CO               Publ./
                                                           Ashville, NC

Transcender LLC                  Kaplan/New York          Info.
                                                              Holdings/
                                                           Stamford, CT

Campus Security Report NL*       LRP Publ./Horsham, PA    Rusting
   School Security Report NL*                                    Publ./
                                                           Westbury, NY

Kagan World Media                MCG Capital/Arlington,   Primedia/
   including 40 NLs, 60               VA                       New York
   reference reports and conferences

Contemporary L-T Care*           NPT Publ./Parsippany,    Leisure
                                      NJ                    Publ./L.A.,
   J. of Healthcare Protection Management*                           CA
   two other NLs, books and info. services

NurseWeek*                       Nursing Spectrum/        Jobson Publ./
                                      H.E., IL                 New York

chemical bus. services           PBI Media/Potomac, MD    SRI
                                                            Consulting/
                                                          Palo Alto, CA

Art Business News*               Pfingsten Publ./Clew.,   Advanstar
   Frasing Business News*             OH                         Comm./
   and two related trade shows                                 New York

J. Industriel du Quebec*         Rogers Media/Toronto,    Info
                                      ON                    Industriel/
                                                              Laval, PQ

juvenile retail books            School Spec./            McGraw-Hill/
                                      Greenville, WI           New York

CCBN, Inc.                       Thomson Corp./           management/
                                      Stamford, CT           Boston, MA

Education To Go, Inc.            Thomson Learning/        management/
                                      Boston, MA           Temecula, CA

Quickfinder, Inc.                Thomson Tax/Ft.          management/
                                      Worth, TX             Minnetonka,
                                                                     MN

ag references & info.            Vance Publ./             C&P Press/
                                      Lincolnshire, IL         New York

Physician's Online               WebMD/Elmwood Park, NJ   Andrx Corp./
                                                            Boca Raton,
                                                                     FL

Government Security News         World Bus. Media/        News Comm.
                                      New York            Inc./New York

Market News International        Xinhua Financial/        management/
                                      Hong Kong                New York

Periodical titles are in bold.

Note: Periodical titles are indicated with *.