Gregory F. Treverton-Wilhelm Agrell <br/><br/>
National Intelligence Systems  Current Research and Future Prospects 

 -  Cambridge University Press  2009 
<br/><br/><label>ISBN: </label>9780521518574 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Intelligence & Espionage<br/> Military <br/>HISTORY <br/>Intelligence service.,Military intelligence.