Commission Regulation (EEC) No 2674/80 of 17 October 1980 amending for the third time Regulation (EEC) No 2730/79 laying down common detailed rules for the application of the system of export refunds on agricultural products and amending Regulation (EEC) No 798/80 laying down detailed rules on the advance payment of export refunds and positive monetary compensatory amounts in respect of agricultural products.