Habakkuk, Hrothgar John <br/><br/>
American and British technology in the nineteenth century  the search for labnour saving inventions 

 - Cambridge  University Press  1967 
 - [9], 222p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS
<br/><br/><label>Dewey Class. No.: </label>339.65  / H11