The text of the English version of Article 1 (1) of Regulation (EEC) No 1822/77 shall be replaced by the following:
'1. The co-responsibility levy shall be due from all milk producers whose farms are not situated in one of the regions referred to in Article 1 (2) of Regulation (EEC) No 1079/77 in respect of all cows' milk bought from them as such by an undertaking treating or processing milk and delivered on or after 16 September 1977.'