& Saadoon J. OF EFFECT OF SOME SOIL TILLAGE SYSTEMS ON TILLAGE APPEARANCE AND SOME TECHNICAL INDICATORS MACHINARY UNITS. Iraqi J. Agric. Sci. [Internet]. 2016 Oct. 28 [cited 2024 May 4];47(5). Available from: https://jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/496