Studentized range statistic q

From: Francis PEREE (fperee_at_ulg.ac.be)
Date: 02/13/05 

Date: Sun, 13 Feb 2005 18:26:56 +0100

Hello,

In Howell's book (Statistical Methods for Psychology), one can find a table
of the "Critical values of the studentized range statistic q". However, this
table is limited to 15 number of steps between ordered means.
I need more steps than 15 ... and i don't have the "Pearson E.S., Hartley
H.O., Biometrika Tables for Statisticians, third edition, volume 1,
Cambridge University Press, 1970" (witch is expensive to buy)

Does somebody know how is it possible to find critical values of statistic q
for number of steps greater than 15 ?

Thanks in advance for your response.

Francis PEREE - Belgium