Mahdi Saleh Al-Rashidy, F., فاتن, Jabar Al-Shaheree, Y. and یوسف 2021. Study of Light Wavelength and Some Concentration Salts in Growth Medium on Growth, Protein and Nitrogen Content of Hapalosiphon arboreus 3OW05S02. Journal of Education and Science (JES). 30, 2 (Jun. 2021), 92–103. DOI:https://doi.org/10.33899/edusj.2021.128991.1122.