Major trade and professional publication, online & related property acquisitions, fourth quarter, 2001.

MAJOR TRADE AND PROFESSIONAL PUBLICATION. ONLINE & RELATED PROPERTY
ACQUISITIONS, FOURTH QUARTER, 2001

Publication/Property       Buyer

Global Cosmetics Industry  Allured Publishing Corp./
                            Carol Stream, IL
R.R. Bowker                Cambridge Information
                            Gp./ Bethesda, MD
Plastics Auxiliaries &     Canon Comm./L.A., CA
 Machinery
Journal of Commerce Group  Commonwealth Bus. Media/
 JoC, PIERS, Traffic
 World four other
 magazines and Websites
GSE Today                  Cygnus Bus./Westport. CT
Professional Tool &        Cygnus Business Media/
 Equipment Distributor      Westport, CT

Allied Health book line    Delmar Learning/Albany,
                            NY
Harris Infosource Int.     DNB, Inc./Murray Hill,
                            NJ
Physicians Decisions       Elsevier Science/New
                            York
Pyramid Research           Executive Insight/L.A.,
                            CA
IBZ databases              Gale Group/Farmington
                            Hills, MI
Liquent, Inc.              Info. Holdings/New York
Online                     Info. Today/Medford, NJ
R.R. Bowker references     Info. Today/Medford, NJ

Mac Publishing (50%)       Int. Data Group/Boston,
                            MA
CourtLink Corp.            LexisNexis/Dayton, OH

Uniscore, Inc.             McGraw-Hill/Monterey, CA
ACNielsen eRatings.com     NetRatings/Milpitas, CA
 (80%)
Jupiter Media Metrix       NetRatings/Milpitas, CA
Bacon's Information        Observer AB/Stockholm
netLibrary                 OCLC/Dublin, OH
Metal Center News          Sackett Business Media/
 expo and Web site          Oak Brook, IL
Tom Synder Productions     Scholastic, Inc/New York
Call Center News NL        Silver Lake Publ./L.A.,
                            CA
CFA Advisor (online)       Sys-Con Media/Montvale,
                            NJ
book titles                Taylor & Francis/London
Jaarbeurs Exhibitions      VNU/Amsterdam, Neth.
 (50%)
Great Communicator NL      Wicks Bus./Fairfield, CT
Cutter Environment         Wolters Kluwer/Chicago,
 five newsletters,          IL
 reports and
 directories
esalestax.com (under 50%)  Wolters Kluwer/Chicago,
                            IL
five accounting            Wolters Kluwer/Chicago,
newsletters                 IL
Medi-Span                  Wolters Kluwer/Phil., PA

Publication/Property       Seller

Global Cosmetics Industry  Advanstar/New York

R.R. Bowker                Cahners Bus. Info./New
                            York
Plastics Auxiliaries &     Tidewater Publication
 Machinery                  Services/Tequesta, FL
Journal of Commerce Group  Economist Gp./London
 JoC, PIERS, Traffic
 World four other
 magazines and Websites
GSE Today                  General Pub./LasCruces,NM
Professional Tool &        Marketing Advertising
 Equipment Distributor      Comm. Services/Chicago,
                            IL
Allied Health book line    Career Publ./Orange, CA

Harris Infosource Int.     management/Twins burg, OH

Physicians Decisions       management/London

Pyramid Research           Economist Gp./Cambridge,
                            MA
IBZ databases              Zeller Veralg/Osnabruck,
                            Ger.
Liquent, Inc.              shareholders/Phil., PA
Online                     Online, Inc./Wilton, CT
R.R. Bowker references     Cahners Bus. Info./New
                            York
Mac Publishing (50%)       Ziff Davis Media/S.F., CA

CourtLink Corp.            Internet Capital/Bellevue,
                            WA
Uniscore, Inc.             management/Delran, NJ
ACNielsen eRatings.com     VNU/New York
 (80%)
Jupiter Media Metrix       management/New York
Bacon's Information        Primedia/New York
netLibrary                 management/Boulder, CO
Metal Center News          Metal Bulletin Group/
 expo and Web site          Surrey, UK
Tom Synder Productions     Torstar/Toronto
Call Center News NL        management/New York

CFA Advisor (online)       management/San Diego, CA

book titles                Sleeping Bear/Chelsea, MI
Jaarbeurs Exhibitions      Jaar beurs/Utrecht, Neth.
 (50%)
Great Communicator NL      NIBM/McLean, VA
Cutter Environment         Cutter Info./Arlington,
 five newsletters,          MA
 reports and
 directories
esalestax.com (under 50%)  management/Englewood,
                            CO
five accounting            Strafford Publ./Atlanta,
newsletters                 GA
Medi-Span                  Hearst Corp./New York