Muslih, Mohamed Basil, and Jdoua Shehab A. Al-Jumaili. “A Standard and Economic Analysis of the Production Efficiency of Fish Farms (ponds) in Salah Al-Din Governorate Tikrit for the Period 2020-2021”. Tikrit Journal of Administrative and Economic Sciences, vol. 17, no. 55, 2, Sept. 2021, pp. 570-9, doi:10.25130/tjaes.17.55.2.33.