![]() | Combined Production of Electric Power and Heat : Proceedings of a Seminar Organized by the Committee on Electric Power of the United Nations Economic Commission for Europe, Hamburg, Federal Republic of Germany, 6-9 November 1978 |
![hidden image for function call](https://upload.wikimedia.org/wikipedia/commons/c/ca/1x1.png)
![]() | Combined Production of Electric Power and Heat : Proceedings of a Seminar Organized by the Committee on Electric Power of the United Nations Economic Commission for Europe, Hamburg, Federal Republic of Germany, 6-9 November 1978 |