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

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

Publication/Property          Buyer

Claritas Europe               Acxiom Corp./Little Rock, AR
Cadence                       Advanstar Comm./Boston, MA
news monitoring division      Bacon's Info./Chicago, IL
Atchley Systems               Bankers Systems/St. Cloud, MN
Int. Journal of Clinical      Blackwell Publ./Boston, MA
  Practice
Broadband Intelligence        BNA/Wash., D.C.
Scandinavian assets           Bonnier Bus. Info./Stockholm
Media General Financial       CenterPoint Data/Wash., D.C.
  Services unit
Cliggott Publishing           CMP Media/Manhasset, NY
  Consultant
  Infections in Medicine
  and five other medical journals
The Oncology Group            CMP Media/Manhasset, NY
  Oncology
  Oncology News International
  and related print and online materials
"Int'l. Pipeline Expo"        dmg world media/London
"Quebec City Cam-Expo"        dmg world media/London
Golf Course News              GIE Media/Cleveland, OH
Information Resources Inc     Gingko Corp./Palo Alto, CA
Farm Business Comm.           Glacier Ventures Int./
  Canola Guide                  Vancouver, BC
  Canadian Cattlemen
  three other ag mags and related materials
Swets Test International      Harcourt Assess./San Ant., TX
eSchool Online                Harcourt Educ./Brisbane, CA
Advisory Publications         HCPro/Marblehead, MA
  including six monthly newsletters
National Underwriter Co.      Highline Media/New York
  National Underwriter P&C
  National Underwriter Life & Health
  Claims, Tech Decisions and Florida Underwriter
Cognitive Concepts            Houghton Mifflin/Boston, MA
Edusoft                       Houghton Mifflin/Boston, MA
PJB Publications              Informa Gp./London
  J. of Medical Economics
  J. of Drug Assessment
  eight other journals, 11 newsletters and three e-letters
CDC Solutions                 Info. Holdings/Stamford, CT
Marketing Metrics             Ipsos/Paris
DRMwatch.com                  Jupitermedia/Darien, CT
Transcender LLC               Kaplan, Inc./New York
Cableworld Magazine           PBI Media/Potomac, MD
New Media Holdings            PLATO Learn'g/Bloomington, MN
Les Editions CEC              Quebecor Media/Montreal, PQ
Marcel Dekker, inc.           Taylor & Francis/London
  Animal Biotechnology
  Drug & Chemical Toxicology
  Int. J. of Food Properties, 75 other journals and 3000 book titles
Swets & Zeitlinger Publ.      Taylor & Francis/New York
  English Studies
  40 other journals and 2000 book titles
LabMice.net                   TechTarget/Needham, MA
Biological Abstracts Inc.     Thomson Corp./Toronto, ON
  and BIOSIS UK (York, UK)
J.H. Robinson Publishers      Torstar/Toronto, ON
Eurisko                       United Bus. Media/London
Federal Sources, Inc.         Wash. Management/Wash., D.C.
Mediafax-EDI                  WebMD/Elmwood Park, NJ

Publication/Property          Seller

Claritas Europe               VNU/Haarlem, the Neth.
Cadence                       CMP Media/Manhasset, NY
news monitoring division      AIS/New York
Atchley Systems               management/Dallas, TX
Int. Journal of Clinical      Medicom/Bronxville, NY
  Practice
Broadband Intelligence        Broadband Intel./Wash., D.C.
Scandinavian assets           D&B/Shory Hills, NJ
Media General Financial       Media General/Richmond, VA
  Services unit
Cliggott Publishing           SCP Comm./New York
  Consultant
  Infections in Medicine
  and five other medical journals
The Oncology Group            SCP Comm./New York
  Oncology
  Oncology News International
  and related print and online materials
"Int'l. Pipeline Expo"        IPE/Calgary, AB
"Quebec City Cam-Expo"        Roger Desrosiers/Mont., PQ
Golf Course News              United Publ./Yarmouth, ME
Information Resources Inc     shareholders/Chicago, IL
Farm Business Comm.           Agricore United/Winnipeg, MB
  Canola Guide
  Canadian Cattlemen
  three other ag mags and related materials
Swets Test International      Swets & Zeitlinger/Lisse
eSchool Online                OpenTV/San Fran., CA
Advisory Publications         management/Conshohoken, PA
  including six monthly newsletters
National Underwriter Co.      management/Erlanger, KY
  National Underwriter P&C
  National Underwriter Life & Health
  Claims, Tech Decisions and Florida Underwriter
Cognitive Concepts            management/Evanston, IL
Edusoft                       management/San Fran., CA
PJB Publications              management/Surrey, UK; N.Y.
  J. of Medical Economics
  J. of Drug Assessment
  eight other journals, 11 newsletters and three e-letters
CDC Solutions                 3i, Inc./Palo Alto, CA
Marketing Metrics             management/Paramus, NJ
DRMwatch.com                  GiantSteps Media/New York
Transcender LLC               Inf. Holdings/Stamford, CT
Cableworld Magazine           Primedia/New York
New Media Holdings            shareholders/London
Les Editions CEC              Hachette Livre/Paris
Marcel Dekker, inc.           Dekker Group/New York
  Animal Biotechnology
  Drug & Chemical Toxicology
  Int. J. of Food Properties, 75 other journals and 3000 book titles
Swets & Zeitlinger Publ.      Swets & Zeitlinger/Lisse,
  English Studies               the Neth.
  40 other journals and 2000 book titles
LabMice.net                   management/Boston, MA
Biological Abstracts Inc.     BIOSIS/Phil., PA
  and BIOSIS UK (York, UK)
J.H. Robinson Publishers      management/Toronto, ON
Eurisko                       shareholders/Milan
Federal Sources, Inc.         Primedia/New York
Mediafax-EDI                  management/Nashville, TN