Figure 4. Groundwater classification diagram (1991 analysis)

From

Evaluation of Ground Water Quality in North East Wadi Halfa, Northern State, Sudan

Ezzat Ahmed Abd Elsayed, Elhag A. B, Yousif A. M

American Journal of Water Resources. 2021, 9(2), 103-110 doi:10.12691/ajwr-9-2-7