Tinker tiller technical change: Technology from the people 

 - London:  Intermediate technology,  1990. 
 - 278p.;  23 cm 
<br/><br/><label>ISBN: </label>1-85339-061-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied Science
<br/><br/><label>Dewey Class. No.: </label>600  / TIN