Oviedo, Ana Maria. Economic informality : causes, cost, and policies- a literature survey / By Ana Maria Oviedo, Mark R Thomas and Kamer Karakurum-Ozdemir. - 1st Ed. - New York : World Bank, 2009. - 42p. ; 00 cm. ISBN: 9780821379967 Subjects--Topical Terms: ECONOMICS. Dewey Class. No.: 330 / OVI