Seligman, Edwin R.A. <br/><br/>
Seligman's Encyclopaedia of the Social Sciences :  Lefroy - Machine, Political (vol.-9, Part-II) 
/ edited by Edwin R.A. Seligman [et...al] 
 - New Delhi:  Cosmo Publications,  2006. 
 - 661p. 
<br/><br/><label>ISBN: </label>8130704900 
<br/><br/><label>Dewey Class. No.: </label>300.3  / SEL/S