Aboukarima, A.M. et al. 2020. Evaluating the hazards of background radiation and cesium in the soil of greenhouses within the region of Riyadh, Saudi Arabia. Journal of agricultural, environmental and veterinary sciences. 4, 2 (Jun. 2020), 74–54. DOI:https://doi.org/10.26389/AJSRP.W050220.