1. Hollies J D (1979) Pointers to profitable wheat ICI Agricultural Division, Billingham, Cleveland, UK, 24 pp
2. Hollies J D (1980) Pointers to profitable wheat ICI Agricultural Division, Billingham, Cleveland, UK, 26 pp
3. Jones M J, Dinnls E R (1977) Towards a 10 tonne wheat crop ICI Agricultural Division, Billingham, Cleveland, UK, 16pp
4. Jones M J (1978) Pointers to profitable wheat ICI Agricultural Division, Billingham, Cleveland, UK, 20 pp