Singer, H. W.  1910- <br/><br/>
Technologies for basic needs / 
Hans Singer. 
 - Geneva:  International Labour Office,  1977. 
 - x, 158 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9221017745 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology.