Spencer, Herbert <br/><br/>
The principles of ethics. 

 - London :  Williams and Norgate,  1892. 
 - 2 v. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ETICA<br/>FILOSOFIA
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>FILOSOFIA