Buchanan, R. A. (Robert Angus), 1930- <br/><br/>
Technology and social progress / 
by R.A. Buchanan. 
 - Oxford:  Pergamon Press,  1965. 
 - viii, 172 p. :  ill. ;  20 cm. 
<br/><br/>p. 164-165. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social change<br/>Technology and civilization