1. Liquid manure handling;Berglund,1965
2. Straw-based techniques for composting;Biddlestone;BioCycle,1986
3. Water retaining capacity of various silage additives and silage crops under pressure;Dexter;Agronomy Journal,1961
4. The development of procedures for straw chop length classification;Holden,1985
5. Codes of recommendations for the welfare of livestock—Pigs;MAFF,1968