1. Abbaas, M.M., 2002. Effect of some heavy metals in the irrigation water on growth and chemical constituents of some timber trees. Dissertation. University of Cairo, Cairo, Egypt.
2. Effect of wastewater irrigation on mineral composition of corn and sorghum plants in a pot experiment;Al-Jaloud;Journal of Plant Nutrition,1995
3. Ali, H.M., El-Mahrouk, E.M., Hassan, F.A., Khamis, M.H., 2010. Growth, chemical compositions and soil properties of Tipuana speciosa irrigated with sewage effluent. Paper presented at the 25th Meeting of Saudi Biological Society, Nanotechnology in Life Sciences, Alasa City at King Faisal University.
4. APHA–AWWA–WEF, 1995. Standard Methods for the Examination of Water and Wastewater, 19th ed. APHA-AWWA-WEF, Washington, DC.
5. Azevedo, C.M.S.B., 1998. Nitrogen transfer using 15N as a tracer in an integrated aquaculture and agriculture system. Dissertation. University of Arizona, Tucson, Arizona.