Jaafar , E. A Comparative Study Between Seemingly Unrelated Regression Equations (SURE) and the Ordinary Least Squares Method (OLS) in Determining Labor Demand in Iraq for the Years (1990-2020): A Comparative Study Between Seemingly Unrelated Regression Equations (SURE) and the Ordinary Least Squares Method (OLS) in Determining Labor Demand in Iraq for the Years (1990-2020). GEJ 2023, 39, 37-74.