Al-Jbawi, Entessar, Waeel Sabsabi, Gharibo Gharibo, and Abd Al-Sayed Omar. 2015. “Effect of Sowing Date and Plant Density on Bolting of Four Sugar Beet (Beta Vulgaris L.) Varieties”. International Journal of Environment 4 (2), 256-70. https://doi.org/10.3126/ije.v4i2.12647.