38480.git, branch main Scientific American, Vol. XXXIX.—No. 24. [New Series.],... initial commit of ebook 38480 2025-10-15T03:10:25+00:00 Roger Frank rfrank@pglaf.org 2025-10-15T03:10:25+00:00 0c2afbe12079d968f1709691d4a6d0b1e14f8630