Wright,Georg Henrik Van,  1916- <br/><br/>
Norm and action :  a logikal enquiry / 
Georg Henrik von Wright 
 - London :  Rouledge & Kegan Paul  1963 
 - xviii, 214 p. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>LCCN: </label>63-018079 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Duty--Ethics