The information service on biogas technology has been developed and produced on the behalf of the GTZ project Information and Advisory Service on Appropriate Technology (ISAT). Volume II emphasises the design and operation of biogas plants.
ISAT ; GTZ (1999): Biogas - Application and Product Development. (= Biogas Digest , 2 ). Information and Advisory Services on Appropriate Technology (ISAT) and German Technical Cooperation (GTZ) GmbH URL [Accessed: 03.06.2019]