A report on the 2nd international symposium on anaerobic digestion, Travemunde, Germany, 6-11 September 1981 : including reports on a study tour of Danish Biogas Plants, 2-4 September and a visit to F.A.L. Technological Institute, Braunschweig, Germany 11-13 September 1981 /
Nielsen, V. C.
Great Britain. Agricultural Development and Advisory Service.
[Alnwick] : M.A.F.F.,
1982.
Agricultural wastes.
Animal waste.