البنا ، ع. ر . 1990 . معدات تهیئة التربة . وزارة التعلیم العالی والبحث العلمی ، جامعة الموصل . کلیة الزراعة . ص 123 .
الجبوری ، م. ک. ع . 2005 . جهاز مقاومة اختراق التربة المصنع محلیاً . مجلة العلوم الزراعیة . مجلد (37) العدد (2) ص : 18 .
Buader,J.W.; G.W. Rundall, and J.B. Swann. 1981. Effect of four continuous tillage systems on mechanical impedance of a clay loam soil. Sci. of Amer. J. 45:802-806.
Charles, S.M. 1984. Effect of ballast and inflation pressure on tractor tire performance. Agriculture Engineering J, 65(2):2-14.
French, R.H. 2003. Farm Machinery Performance and Facts Trans. Of ASAE 3(5):335-342.
Mulgueen, J ; J.V. Staffordand, and D.W. Tanner. 1977. Evaluation of pentrometers for measuring soil strength. Journal of Terra mechanics. 14(3) : 137-151 .
Raghavan, G.S. and E. Mckyes. 1979. Performance of traction wheels in a clay soil. Trans. Of ASAE. 22(2) : 1611-1618
Reithmuller, G.P. 1988. Draft requirement of tillage equipments in the western Australian wheat belt. Conference of Agric. Engineering. 25-30 September pp. 137-141).
Stands, R.E.; E.L. Greacen and C.J. Gerard. 1979. Compaction sandy soils in Radiats a pin forests. Aust., J. of Soil. P. 331-337
Vazyues, D.L; R.N. Myhre; E.A. Hanlon and K.M. Portier. 1989. Soil compaction associated with tillage treatments for soybean. Soil Tillage Res. 13:35-45.
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