Schurz Gerhard <br/><br/>
Is-ought problem    aaaaan investigation in philosophical logic.      

 - London  Kluwer Academic Publishers       1997 
 - x,332p.  cm. 
 - Trends in logic studia logica library. .
<br/><br/><label>Standard No.: </label>43252 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R1, N7