“The Role of the Cost Method Based on Specifications in Supporting the Competitiveness of the Industrial Sector of Poultry Companies’ A Field Study on Arab Poultry Company-Khartoum”. Journal of Economic, Administrative and Legal Sciences, vol. 5, no. 20, Oct. 2021, pp. 119-03, https://doi.org/10.26389/AJSRP.M290621.