Effluents from livestock
Gasser, John Kenneth Russell.
Vetter, H.
London Applied Science Publishers
1980
'Proceedings of a seminar to discuss work carried out within the EEC under the programme Effluents from Intensive Livestock, organised by Professor Dr. H. Vetter, and held at Bad Zwischenahn, 2-5 October, 1979' - half title page verso
Animal waste
Farm manure