[Bell Historians] Re: Levels of Bell Production

[Andrew Cairns]

 Looking at the two graphs they both seem to show consistency in number and
weight from 1600-2000 (if you take the period 1850-1950 out as abnormally
high).
 
Andrew 
.
 
<http://geo.yahoo.com/serv?s=97359714/grpId=5029388/grpspId=1707285820/msgId
=15869/stime=1255786485/nc1=1/nc2=2/nc3=3> 


           
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ringingworld.co.uk/pipermail/bell-historians/attachments/20091017/adbdc927/attachment.html>