Habakkuk, H. J  <br/><br/>
American and british technology in the nineteenth century:  The search for labor saving invention / 
H. J  Habakkuk 
 - Cambridge  Cambridge University Press  1967 
 - 222p  ill.   21 cm.  
<br/><br/>Includes index  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor inventions --Technological aspects 
<br/><br/><label>Dewey Class. No.: </label>338.06  / HAB