Энэ нь Link Таны хэл дээр байхгүй байгаа, Нь харах: English (en),
Эсвэл Google Translate ашиглах:  

biogas.ifas.ufl.edu/ad_developmen...digestvol2.pdf

This information service on biogas technology has been developed and produced on the order of the GTZ project Information and Advisory Service on Appropriate Technology (ISAT) for the ISAT Website in a collaborative effort. 

Information included in this document include application and production development, digestor types, parts of biogas plants, and much more.