Mill, John Stuart.
Principles of political economy: with some of their applications to social philosophy. 1 : Books 1-2 /
introduction by V.W. Bladen ; textual editor : J.M. Robson 
. - Toronto : Buffalo : University of Toronto Press,  Routledge & Kegan Paul,  1977 
. - cixv, 451 p.  25 cm. 
<br/><label>  ISBN: </label>0-8020-5146-4