A. . B. & Al Hani, “ECONOMETRICS ANALYSIS FOR SUPPLY RESPONS OF WHEAT CROP USING AUTOREGRESSIVE DISTIRBUTED LAG MODELS( ARDL) FOR THE PERIOD (1970-2014)”, Iraqi J. Agric. Sci., vol. 48, no. 6 B, Dec. 2017, doi: 10.36103/ijas.v48i6 B.278.