15 Jun
2018
15 Jun
'18
10:30 p.m.
Light and Colour Theories, by Joseph W. Lovibond 57335 [Subtitle: and their relation to light and colour standardization] [Link: http://www.gutenberg.org/5/7/3/3/57335 ] [Files: ; 57335-0.txt; 57335-h.htm] Thanks to Chris Curnow, Chris Jordan and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Al