Non-observed economy in national accounts: survey of country practices  (UNECE 
/United Nations Economic Commission for Europe(UNECE) 
 - New York  UNITED NATIONS  2008 
 - 339p. :illustrations 
<br/><br/><label>ISBN: </label>9789211169874 
<br/><br/><label>LC Class. No.: </label>UN-ECE(02)2008/2