This is an excellent question to ask the reference librarian at your local
library.
Please find out and email back to Snaktalk.
Deb
________________________
Deb Hunt
Snacktalk Moderator
Exploratorium
3601 Lyon Street
San Francisco, CA 94123-1099
dhunt@exploratorium.edu
On Mon, 7 Apr 2003 Learl1nv@aol.com wrote:
> What materials make the most effective shields?
>
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