beta reference....

[BrownDR@micf.nist.gov]

Does anyone know of a good beta energy reference which lists betas by energy and subsequently the 

identifying nuclide..?......Like the ones typically used for identifying unknown gammas.  Either 

printed or electronic media is fine.

Dave Brown, chp
NIST Reactor Health Physics
Gaithersburg, MD
browndr@micf.nist.gov
301-975-5810
....The above statements are my own and have not been reviewed or endorsed by my employer....