Pick, Otto <br/><br/>
Collective security / 
Otto Pick and Julian Critchley 
 - London :  MacMillan,  1974 
 - 123 p. ;  23 cm. 
 - Key concepts in political science .
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 115-117 
<br/><br/><label>ISBN: </label>0333144031 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Security, International
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Europe--Defenses