Oviedo A.M. <br/><br/>
Economic Informality  Cause, Costs, and Policies - A Literature Survey 
Oviedo A.M. Thomas M.R. 
 - Washington  The World Bank  2009. 
 - 44 p. 
<br/><br/>w/2726 
<br/><br/><label>ISBN: </label>978-0-8213-7996-7