++++ 1.Member States - Obligations - Obligation to act in the place of the Council whenever it fails to act - None ( EEC Treaty, Art . 5 ) 2.Tax provisions - Harmonization of laws - Turnover taxes - Common system of value-added tax - Sale by taxable persons of second-hand goods purchased from non-taxable persons - National rules which do not allow account to be taken of the residual tax contained in the purchase price - Not incompatible with the Community rules as they now stand ( Council Directive 77/388/EEC, Art . 32 )