& SAADOON, Jasim. OF EFFECT OF SOME SOIL TILLAGE SYSTEMS ON TILLAGE APPEARANCE AND SOME TECHNICAL INDICATORS MACHINARY UNITS. IRAQI JOURNAL OF AGRICULTURAL SCIENCES, [S. l.], v. 47, n. 5, 2016. DOI: 10.36103/ijas.v47i5.496. Disponível em: https://www.jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/496. Acesso em: 1 may. 2025.