26 Feb
2013
26 Feb
'13
9:39 p.m.
History of Gunter's Scale, by Florian Cajori 42216 [Full title: On the History of Gunter's Scale and the Slide Rule during the Seventeenth Century] [Link: http://www.gutenberg.org/4/2/2/1/42216 ] [Files: 42216.txt; 42216-8.txt; 42216-0.txt; 42216-h.htm] Thanks to Brenda Lewis, Stephen Hutcheson and the Online Distributed Proofreading Canada Team at http://www.pgdpcanada.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) Regards, Al