Tinker, tiller, technical change:  by Technologies from the people. 

 - UK,  Intermediate technology publications.  1990. 
 - 278p. 
<br/><br/><label>ISBN: </label>0-942850-31-9 (USA) 
<br/><br/><label>Subjects--Topical Terms: </label>--School of Engineering and Technology
<br/><br/><label>LC Class. No.: </label>T 173.8   / .A66 1990