1. Some aspects of tyre design and their effect on agricultural tractor performance;Dwyer,1975
2. Traction efficiency;Gee-Clough,1978
3. Compaction of soil by agricultural equipment;Chancellor;Univ. Calif. Div. Agric. Sci. Bull. 1881,1976
4. The effects of soil compaction on soil structure and crop yields;Eriksson;Swed. Inst. Agric. Engng Bull.,1974
5. A method of predicting changes of dry bulk density of field soils beneath wheels of agricultural vehicles;Blackwell;University of Edinburgh Ph.D. Thesis,1978