11 Apr
2019
11 Apr
'19
4:49 a.m.
The Mathematical Theory of Relativity, by Arthur Stanley Eddington 59248 [Link: http://www.gutenberg.org/5/9/2/4/59248 ] [Files: 59248-8.txt, 59248-pdf.pdf] Thanks to Andrew D. Hwang Regards, Al
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Al Haines