Hitchings, Rob <br/><br/>
How to make a folding machine for sheet metal work 
/ by Rob Hitchings 
. - London  : Intermediate Technology Publications, 1981
. - 31 p.  : ill., couv. ill.  ; 26 cm. 
<br/><br/><label>ISBN: </label>0903031760 
<br/><br/><label>Source: </label> Don du Consulat britannique 
<br/><br/><label>Universal Decimal Class. No.: </label>621.981.