Books
- Agricultural Change Since 1750 (History in Depth S.)
- Fertilisers and soils in New Zealand farming
- Borderland farming: Possibilities and limitations of farming in the Roman period and early Middle Ages between the Rhine and Meuse
- Asae Standards 2003 (Asae Standards (American Society of Agricultural Engineers))
- Crops I (Biotechnology in Agriculture and Forestry, Vol 2)
Books