Changes made by Council Regulation (EEC) No 1972/83 of 11 July 1983 on the granting of financial support for demonstration projects relating to the exploitation of alternative energy sources and to energy saving and the substitution of hydrocarbons: Council Regulation (EEC) No 726/79 of 9 April 1979 fixing the maximum amount of aid to be made available pursuant to Council Regulation (EEC) No 1302/78 on the granting of financial support for projects to exploit alternative energy sources