Asmaa A. Alwash, and Firas Salim Al-Aani. “PERFORMANCE EVALUATION OF SEED DRILL- FERTILIZER UNDER TWO DIFFERENT FARMING SYSTEMS AND TRACTOR PRACTICAL SPEEDS”. IRAQI JOURNAL OF AGRICULTURAL SCIENCES, vol. 54, no. 4, Aug. 2023, pp. 1155-62, https://doi.org/10.36103/ijas.v54i4.1809.