Study on the impacts of the internal pay gap on enterprise's total factor productivity 并列题名：Study on the impacts of the internal pay gap on enterprise's total factor productivity Study on the impact of rural infrastructure on agricultural total factor productivity Study on the impact of agricultural farmland transfer on agricultural total factor productivity Study on the impact of internal control on enterprise financing Studies on the infrastructure investment's impact on China's total factor productivity Research on the effect of environmental regulation on green total factor productivity Study on the impact of farm machinery services outsourcing on total factor productivity of grain Research on dislocation of incentive mechanism and enterprise total factor productivity 并列题名：Studies on the infrastructure investment's impact on China's total factor productivity