WebSites :

www.britannica.com
www.nuclearfiles.org
www.funkandwagnalls.com
www.nmsi.ac.uk/on-line/fusion
http://fusioned.gat.com
www.nuclearsurvival.com
http://royal.okanagan.bc.ca/mpidwirn/energyuse
adwww.fnal.gov/www/ntf/neutrons_against_cancer/neutrons_against_cancer.htm
www.ask.ne.jp/~hankaku/english/chronotbl.html#0000
http://nas.cped.ornl.gov/pgm-med.html
www.fas.org/nuke/hew/ (for Nuclear Weapons Frequently Asked Questions by Carey Sublette)
www.milnet.com/milnet/nuclear.htm
www.2learn.ca

Books :

Bohr and Quantum theory by Paul Strathern
J.Oppenheimer by Paul Strathern

CD's

DK encyclopaedia of science
Encarta Encyclopaedia