Facts in focus / 
compiled by the Central Statistical Office. 
 - 4th ed. 
 - Harmondsworth :  [London] :  Penguin ;  H.M.S.O.,  1978. 
 - 255 p. :  ill. ;  20 cm. 
 - Penguin reference books .
<br/><br/> "Index of sources": p. 249-255. 
<br/><br/><label>ISBN: </label>0140510532 :  £1.50 
<br/><br/><label>LCCN: </label>78312947  
<br/><br/><label>Nat. Bib. No.: </label>GB78-06682 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Great Britain--Statistics.
<br/><br/><label>LC Class. No.: </label>HA1125  / .C45 1978 
<br/><br/><label>Dewey Class. No.: </label>314.1