Comparison of stock prices for selected trade and business information.

COMPARISON OF STOCK PRICES FOR SELECTED TRADE AND BUSINESS INFORMATION
COMPANIES, FROM 1/1/01 & 1/1/02 TO 9/30/02


                            Close On  Close On  Close On    % Chg.
Company                       1/1/01    1/1/02  9/30/02   from 1/1/01

Dow Jones (NY)               $ 56.63   $ 54.73  $ 38.41    - 32.2%
Dun & Bradstreet (NY)          25.88     35.30    33.61    + 29.9
Equifax (NY) (1)               12.85     24.15    21.74    + 69.2
Gartner Group (NY)              6.90     11.69     8.10    + 17.4
Info. Holdings (NY)            23.44     28.31    21.65    -  7.6
Knight-Ridder (NY)             56.88     64.93    56.41    -  0.8
McGraw-Hill (NY)               58.63     60.98    61.22    +  4.4
Moodys (NY)                    25.69     39.86    48.50    + 88.8
Penton Media (NY)              26.88      6.26     0.24    - 99.1
Primedia (NY)                  11.94      4.35     1.39    - 88.4
Rogers Comm. (NY)              17.00     16.80     6.28    - 63.1
John Wiley & Sons (NY)         21.50     23.03    21.95    +  2.1
CNET (NQ)                      16.00      8.97     1.10    - 93.1
Info. Resources (NQ)            3.31      8.30     3.71    + 12.1
Scholastic (1)                 44.32     50.33    44.68    +  0.8
United Business Media (NQ)     10.00      7.92     3.57    - 64.3
Value Line (NQ)                34.56     48.48    39.00    + 12.8
Thomson Corp. (T)              37.82     30.37    24.78    - 34.5
Torstar (T)                    13.02     13.17    15.05    + 15.6
Reuters (L)                    16.27      9.70     3.55    - 78.2
Elsevier (AM)                  14.46     11.51    11.94    - 17.4
VNU (AM)                       50.77     31.18    23.22    - 54.3
Wolters Kluwer (AM)            27.53     22.62    18.07    - 34.4
Totals:                       612.28    612.94   508.17    - 17.0%
DJIA:                       11031.05  10021.50  7591.93    - 31.2%


                              % Chg.
Company                     from 1/1/02

Dow Jones (NY)               - 29.8%
Dun & Bradstreet (NY)        -  4.8
Equifax (NY) (1)             - 10.0
Gartner Group (NY)           - 30.7
Info. Holdings (NY)          - 23.5
Knight-Ridder (NY)           - 13.1
McGraw-Hill (NY)             +  0.4
Moodys (NY)                  + 21.7
Penton Media (NY)            - 96.2
Primedia (NY)                - 68.0
Rogers Comm. (NY)            - 62.6
John Wiley & Sons (NY)       -  4.7
CNET (NQ)                    - 87.7
Info. Resources (NQ)         - 55.3
Scholastic (1)               - 11.2
United Business Media (NQ)   - 54.9
Value Line (NQ)              - 19.6
Thomson Corp. (T)            - 18.4
Torstar (T)                  + 14.3
Reuters (L)                  - 63.4
Elsevier (AM)                +  3.7
VNU (AM)                     - 25.5
Wolters Kluwer (AM)          - 20.1
Totals:                      - 17.1%
DJIA:                        - 24.2%

(1.)Prices adjusted for stock. split.

NY-New York Stock Exchange.

NQ-NASDQ.

T-Toronto.

L-London.

AM-Amsterdam.