B. & Al Hani, “AN ECONOMIC STUDY OF SUPPIY RESPONSE OF CORN CROP IN IRAQ BY USING AUTOREGRESSIVE DISTIRBUTED LAG MODELS (ARDL) FOR THE PERIOD1970-2014”, Iraqi J. Agric. Sci., vol. 48, no. 6 B, Dec. 2017, doi: 10.36103/ijas.v48i6 B.277.