Gentry, George. <br/><br/>
Hardening and tempering engineers' tools 

 - 1st 
 - London  Percival Marshall & Co.  1950 
 - 90p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tools
<br/><br/><label>Dewey Class. No.: </label>620.11  / G339