How to make a metal bending machine / 
Intermediate Technology Development Group, London. 
 - London:  ITDG, 
 - 20p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural machinery<br/>Metal Binding Machine
<br/><br/><label>Dewey Class. No.: </label>631.3  / nd.