1 Approximation of laws - Motor vehicles - Procedure for Community type-approval - Directive 70/156 - Right of the Member States to refuse to register vehicles with a valid Community type-approval certificate - Conditions - National rules subjecting the registration of motor vehicles to the production of a national certificate declaring that they comply with national exhaust emission rules - Not permissible (Council Directive 70/156, Art. 7(1) and (3)) 2 Community law - Interpretation - Acts of the institutions - Declaration recorded in minutes - Whether to be taken into consideration - Not permissible where no reference is made to the declaration in the act itself