Mathisen, Trygve. <br/><br/>
Methodology in the study of international relations. 

 - Oslo  Oslo University  1959. 
 - x, 265 p.  23 cm. 
<br/><br/>Bibliography: p. [253]-256. 
<br/><br/><label>ISBN: </label>0837174724 (ed. 1974) 
<br/><br/><label>LCCN: </label>evl74003753  
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations--Study and teaching.
<br/><br/><label>LC Class. No.: </label>JX1291  / .M39 1959 
<br/><br/><label>Dewey Class. No.: </label>327/.01/8