1. Ride vibration studies;Anon,1977
2. An investigation of tractor operator posture;Aziz,1973
3. Subjective field assessment of a tractor swivelling seat;Barber,1976
4. An antropometric survey of 2000 Royal Air Force aircrew, 1970/1971;Bolton;RAE Technical Report No 73083,1973
5. Laboratory assessment of a swivelling seat to improve tractor driver posture;Bottoms;Dep Note DN/E/620/1465,1975