The Physical protection of nuclear material. 

 - [Vienna] :    International Atomic Energy Agency,    1977. 
 - 18 p. :    ill. ;    24 cm. 
 - INFCIRC ; 225 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Nuclear industry -- Security measures.