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/>Bibliography: p. 115-117. Includes index. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0333173449 
<br/><br/><label>LCCN: </label>75300800  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Security, International.<br/>Europe--Defenses.