Butterfield, Herbert <br/><br/>
Diplomatic Investigations  : Essays in the Theory of International Politics 
/ by Herbert Butterfield 
 - London:  George Allen & Unwin LTD,  1966. 
 - 225p.; 
<br/><br/><label>ISBN: </label>000 
<br/><br/><label>Dewey Class. No.: </label>327.1  / BUT/D