TY  - BOOK
AU  - Babbage,Charles
AU  - Morrison,Philip
AU  - Morrison,Emily
TI  - Charles Babbage and his calculating engines: selected writings 
PY  - 1961///
CY  - New York, N.Y.
PB  - Dover Publications
KW  - Calculators
KW  - Scientists
KW  - Correspondence
N1  - Includes index
ER  -