Amazon have a reprinted version, new and used for sale at the moment:
http://www.amazon.co.uk/s/ref=nb_ss_...ce+Terminology
Abebooks has a list to many dealers that have the reprint also:
http://www.abebooks.com/servlet/Sear...nology&x=0&y=0
I have an original copy, a bit battered now! However it has been excellent for Luftwaffe terms, abbreviations etc.
/Ian