Figure 3. Bar diagram showing variation in radon concentration of the ground water and tap water samples

From

Radon Concentrations in Tap and Ground Water in Kirkuk Governorate Using Active Detecting Method RAD7

Ahmed Abad Ibrahim, Issa Zainalabdin Hassan, Sara Hlal moklofe

International Journal of Physics. 2017, 5(2), 37-42 doi:10.12691/ijp-5-2-1