TY  - JOUR
T1  - On a Method of Expressing by Signs the Action of Machinery. 
JF  - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843)
VL  - 2
SP  - 273
EP  - 274
PY  - 1815/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1815.0290
M3  - doi:10.1098/rspl.1815.0290
AU  - Babbage, C.
ER  -