Patel, Surendra J. <br/><br/>
Technological Transformation (vol 5: The Historic Process) 
/by Surendra J. Patel 
 - Ahmedabad:  Gujarat Vidyapith,  1993. 
 - 280p. 
<br/><br/><label>Dewey Class. No.: </label>338.926  / PAT/T