Major trade and professional Publication, online and related Property acquisitions, second quarter, 2001.

MAJOR TRADE AND PROFESSIONAL PUBLICATION, ONLINE AND RELATED PROPERTY
ACQUISITIONS, SECOND QUARTER, 2001

(by buyer)

Property/Publication                         Buyer

Black's Guide, Inc.                          ABRY Partners/Boston, MA
remaining 50% of Scientific                  Alexander Comm./New York
    American Newsletters
Haslam Publications                          Amer. Lawyer Media/New York
    including six legal NL titles
Business 2.0                                 AOL Time Warner/New York
database/online properties                   B2BData Corp./San Diego, CA
STF Services Corp.                           BNA/Washington, D.C.
Powerful Media                               Brill Media/New York
    Inside magazine and Web site
three packaging materials                    Canon Comm./Los Angeles, CA
    trade shows
Structural Engineer                          Cardinal Growth/Chicago, IL
    CE News
Adscope, Inc.                                CMR, Inc./New York
TechRepublic                                 CNET/San Francisco, CA
Design/Build Business                        Cygnus Bus./Westport, CT
Solitaire Publishing                         Delmar/Albany, NY
WI Publications                              Delmar/Albany, NY
Int. Fine Art Expositions                    dmg world media/London
newsletters & references                     Eli Research/Durham, NC
"Selling to Kids" NL                         EPM Comm./New York
DRI, Inc.                                    Global Insight/Waltham, MA
Wharton Econometric Forecasting              Global Insight/Waltham, MA
Associates
Harling Comm.                                HCPro Corp./Marblehead, MA
    healthcare newsletters, books & reports
RPM Magazine                                 House of White Birches/
                                             Berne, IN
GSI Office Management (49%)                  Info. Holdings/New York
Parthenon Publishing                         Info. Holdings/New York
BioTechniques                                Informa Gp./London
two elec./eng'g trade shows                  Intertec/Overland Park, KS
Wrightbooks Pty                              J. Wiley & Sons/New York
Frank Schaffer Publications                  McGraw-Hill/New York
American Metal Worker                        Metal Bulletin/Surrey, UK
     Metal Center News & New Steel
three financial NLs                          MPL Comm./Toronto, ON
Merchants Magazine                           Oaks, Alan/San Diego, CA
     Building Products Digest
SilverPlatter Information                    Ovid Tech./New York
Contractor                                   Penton/Cleveland, OH
DWR Media                                    Penton/Cleveland, OH
     including four IT magazines
telecom conference                           Penton/Cleveland, OH

Bridge Info. Systems assets                  Reuters/London
Marketing Solutions Corp.                    Rogers Media/Toronto, ON
Invest Tracker Tecnologia                    Thomson Financ'l/Boston, MA
First Call (remaining 48%)                   Thomson Financ'l/Boston, MA
Civitas Ediciones SL                         Thomson Legal/Eagan, MN
Lawpoint Pty.                                Thomson Legal/Eagan, MN
Allison-Fisher International                 United Bus. Media/London
educ. & professional books                   Vivendi Universal/Paris
eLawForum (minority interest)                Wolters Kluwer/Chicago, IL
LoisLaw.com                                  Wolters Kluwer/Chicago, IL
OSRA                                         Wolters Kluwer/Amsterdam
Jane's Information Group                     Woodbridge Co./London
    16 magazines and 200 other NLs,
    online & CD titles

Property/Publication                         Seller

Black's Guide, Inc.                          managem't/Gaithersburg, MD
remaining 50% of Scientific                  Scientific Amer./New York
    American Newsletters
Haslam Publications                          management/San Diego, CA
    including six legal NL titles
Business 2.0                                 Imagine Media/S.F., CA
database/online properties                   Facts Online/San Diego, CA
STF Services Corp.                           management/Syracuse, NY
Powerful Media                               management/New York
    Inside magazine and Web site
three packaging materials                    Reed Exhibit's/Norwalk, CT
    trade shows
Structural Engineer                          Civil Engineering News/
    CE News                                  Alpharetta, GA
Adscope, Inc.                                Craven, Sheila/Eugene, OR
TechRepublic                                 Gartner Gp./Stamford, CT
Design/Build Business                        McKellar Publ/Glendale, CA
Solitaire Publishing                         management/Tampa, FL
WI Publications                              management/San Diego, CA
Int. Fine Art Expositions                    Lester Inc./Stuart, FL
newsletters & references                     Thomson Financial/New York
"Selling to Kids" NL                         PBI Media/White Plains, NY
DRI, Inc.                                    McGraw-Hill/New York
Wharton Econometric Forecasting              Thomson Financial/New York
Associates
Harling Comm.                                management/Chicago, IL
    healthcare newsletters, books & reports
RPM Magazine                                 Randall Publishing/
                                             Tuscaloosa, AL
GSI Office Management (49%)                  management/Munich, Ger.
Parthenon Publishing                         management/London
BioTechniques                                EMBT/Natick, MA
two elec./eng'g trade shows                  Continental Exhib./N.Y.
Wrightbooks Pty                              management/Brisbane, Aust.
Frank Schaffer Publications                  Torstar Corp./Toronto, ON
American Metal Worker                        Cahners Bus./New York
     Metal Center News & New Steel
three financial NLs                          Hume Co./Willowdale, ON
Merchants Magazine                           Cutler Publ./Newport
     Building Products Digest                Beach, CA
SilverPlatter Information                    management/Boston, MA
Contractor                                   Cahners Bus./New York
DWR Media                                    management/Sydney, Aust.
     including four IT magazines
telecom conference                           WirelessDeveloper.com/East
                                             Lansing, MI
Bridge Info. Systems assets                  creditors/New York
Marketing Solutions Corp.                    management/Toronto, ON
Invest Tracker Tecnologia                    management/Sao Paolo, Bra.
First Call (remaining 48%)                   partnership/New York
Civitas Ediciones SL                         management/Madrid
Lawpoint Pty.                                management/Sydney, Aust.
Allison-Fisher International                 management/Detroit, MI
educ. & professional books                   Houghton Miff./Boston, MA.
eLawForum (minority interest)                management/Wash., D.C.
LoisLaw.com                                  management/Van Buren, AR
OSRA                                         management/Milan, Italy
Jane's Information Group                     Thomson/Toronto, ON
    16 magazines and 200 other NLs,
    online & CD titles

Magazine and journal titles are in bold.