Showing posts with label daily radiation exposure. Show all posts
Showing posts with label daily radiation exposure. Show all posts
September 22, 2009
August 19, 2008
Radiation Poster.
This is an illustrated poster that shows radiation in daily life. Granite is not listed.
http://henry.sandi.net/staff/gsimpson/root/garrrposter.html
http://henry.sandi.net/staff/gsimpson/root/garrrposter.html
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