Babbage Charles <br/><br/>
On the economy of machinery and manufactures 
Babbage Charles 
 - 4 
 - New York  Kelley USA          1963 
 - xii, 408p  cm. 
 - Reprints of Economic Classics .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical
<br/><br/><label>Dewey Class. No.: </label>X9(D6,8) .3.M3, G5