The world factbook  : 1993-94 
/ publ. annually by the Central Intelligence Ageny 
. - Washington  : Brassey's(US), C.1993
. - XVIII-439p.  : Ill.  ; 29CM. 
 - Brassey's book  02771527 .
<br/><br/><label>ISBN: </label>0028810449 
<br/><br/><label>Universal Decimal Class. No.: </label>030.1