| Biogas digest Volume II, Biogas - Application and product development | ||||||
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 textbook Jan 1998 ; 81 pages   Aut. Werner Kossmann &  Uta Pönitz Ed. GIZ - Eschborn Downloadable format: PdF  (1 000 ko) Downloadable from the publisher    Biogas Digest Volume I: Biogas Basics  Biogas Digest Volume III Biogas - Costs and Benefits and Biogas – Programme Implementation Target Audience: 
 
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