Campbell, Duncan. <br/><br/>
Big brother is listening :  phonetappers & the security state / 
Duncan Campbell :reports from the New Statesman, first published between February 1979 and July 1980 :updated in January 1981. 
 - London :  New Statesman,  1981. 
 - 70p. 
 - NS report ;  2 .
 - NS report ;  2 .
<br/><br/><label>ISBN: </label>0900962089 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wire-tapping--Great Britain.