*E,171
ell
Babbage, Charles, 1792-1871.
Babbage, Henry Prevast, comp,
Babbage's calculating engines, Being a collec- tion of papers relating to them; their history, and construction. London, E. and F. N. Spon, 1889,
342 p. port., diagrs. (part fold.) 30cm.
"Tois volume is intended to bring together oe. the information scattered in various places, re- garding the Calculating Machines of Charles Bab- bage eee e@
1. Caloulating-machines, 2. Babbage, Charles,
1792-1871. I, Babbage, Charles, 1792-1871.