District heating and optimization of energy supply systems in Finnish communities : presented at the Seminar on the Combined Production of Electric Power and Heat, Hamburg (Federal Republic of Germany) 6...9 November 1978
District heating and optimization of energy supply systems in Finnish communities : presented at the Seminar on the Combined Production of Electric Power and Heat, Hamburg (Federal Republic of Germany) 6...9 November 1978
District heating and optimization of energy supply systems in Finnish communities : presented at the Seminar on the Combined Production of Electric Power and Heat, Hamburg (Federal Republic of Germany) 6...9 November 1978
District heating and optimization of energy supply systems in Finnish communities : presented at the Seminar on the Combined Production of Electric Power and Heat, Hamburg (Federal Republic of Germany) 6...9 November 1978