Dictionary of Scientific Biography

Do you need a source for getting serious biogarphic information about several of the renowned researches that have impacted our time ? Here is one source of information which will prove useful and I will recommend it strongly to my students who seem to give too much credit to Wikipedia where topics can easily be controlled by a bunch of politically inclined people (as is the case with Canada's history entries) :

http://www.chlt.org/sandbox/lhl/dsb/page.0.a.php

Luc