Alhujaili, Asmaa Saud2022-05-182022-05-1820182126https://drepo.sdl.edu.sa/handle/20.500.14154/3360The research aims to analyze the productivity of nitrogen fertilizer industries in the GCC countries by employing stochastic frontier analysis (SFA) was employed. The study was based on balanced panel data covering the period 2001-2013, collected from annual reports of the companies in the GCC region.enThesis