00618cam a2200193 4500 129351376 TxAuBib 20090301120000.0 130226s2013||||||||||||||||||||||||eng|u 42216 Project Gutenberg PGUSA eng TxAuBib Cajori, Florian. On the History of Gunter's Scale and the Slide Rule during the Seventeenth Century [Gutenberg] / by Florian Cajori. Project Gutenberg, 2013. Project Gutenberg. Freely available. Electronic text. http://www.gutenberg.org/license Rights TXTLL