Canons of medicine from Avicenna, latin translation, dated 1484 CE. description from en.wikipedia: "I took this image and allow its free use. I put my eyeglasses there for scale." Book is located at UT Health Science Center's library: <a rel="nofollow" class="external free" href="http://www.library.uthscsa.edu/gethelp/help.cfm?Category=Nixon">http://www.library.uthscsa.edu/gethelp/help.cfm?Category=Nixon</a> "
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