!["Coupling" 1976 [Gum-bichromate]](http://2.bp.blogspot.com/_IoU3bEFUwWc/S69lnr9G6AI/AAAAAAAAH58/O40Gg-G6rKk/S150/COUPLING+3.jpg)
I have searched the Internet and have found a wide selection of "science toys" at XUMP covering astronomy, biology, chemistry, geology, and physics. Many novelty items including posters. And there are holiday sale prices. There is a handy search engine for search selections. Check out XUMP.XUMP
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