Gamser, Matthew <br/><br/>
Tinker, tiller, technical change: technologies from the people 

 - London  Intermediate Technology Publications  1990 
 - xvii,278p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technological innovation
<br/><br/><label>LC Class. No.: </label>HC505.T4T56