Malthus T R <br/><br/>
Principles of political economy 
Malthus T R; Pullen John 
 - Cambridge  Cambridge University Press          1989 
 - 601p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>XxL66, M9.1-M9.2