Hudson, W.D. (Ed.) & Flew, Antony (Gen. Ed.) <br/><br/>
Is-Ought Question  Collection of papers on the central problem in moral philosophy 

 - 
 - London  Macmillan Press Ltd.  1972 
 - 271 p. 
 -   .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>170  / H869