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Hydrologic characteristic data of upper drainage basin of the Oder are presented as well as the importance of this basin for Czechoslovakia. The water-sewage management in the Czechoslovakian region, in which a part of the Oder basin lies, is described. In the prevailing part of its run across Czechoslovakia this river serves as a receiver of the sewage. A considerable concentration of the extractive...
Up to the seventies the biogas has been rarely utilized. It started to be utilized on a large scale as a source of energy after 1973 when the prices of fuels and energy went rapidly up. In the paper the USA experience in this branch, which has been gained up till now, is presented, the following problems are discussed: the choice of a proper technology tor the combustion of biogas, I.C. engines operated...
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