TY - BOOK ED - United Nations Economic Commission for Europe (UNECE) TI - Non-observed economy in national accounts: survey of national practices SN - 9211168821 AV - UN-ECE(02)2003/6 PY - 2003/// CY - Geneva PB - UNITED NATIONS KW - NATIONAL INCOME--ACCOUNTING KW - INFORMAL SECTOR (ECONOMICS)--STATISTICAL METHODS ER -