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| | Downloaded from http://rspa.royalsocietypublishing.org/ on February 14, 2016 The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. Series AAdd to Reading ListSource URL: rspa.royalsocietypublishing.orgDownload Document from Source Website File Size: 2,59 MBShare Document on Facebook
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