Duplex,  <br/><br/>
In the Workshop 3 

 - London :   Percival Marshall,   c1951 
 - 196 p.  : ill 
<br/><br/>
<br/><br/>v. 3.   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Workshop Technology
<br/><br/><label>Dewey Class. No.: </label>621.75  / DUP