2003/850/EC: Commission Decision of 4 December 2003 recognising in principle the completeness of the dossiers submitted for detailed examination in view of the possible inclusion of BAS 670H and silver thiosulphate in Annex I to Council Directive 91/414/EEC concerning the placing of plant protection products on the market (Text with EEA relevance) (notified under document number C(2003) 4470)