Acoustic standard for IEC 268 need

Anyone know
How can i find the acoustic by the IEC 268 std ?
I find long time.
Thanks!

bill7604@kimo.com.tw

It is now IEC 60268 and can be found here:

http://domino.iec.ch/webstore/webstore.nsf/SSsearch?openform

On this web page, use 'Compound reference search'.