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Author Title Year Publication Volume Pages
Weerahewa, J.; Timsina, J.; Wickramasinghe, C.; Mimasha, S.; Dayananda, D.; Puspakumara, G. Ancient irrigation systems in Asia and Africa: Typologies, degradation and ecosystem services 2023 Agricultural Systems 205 103580
Vushe, A.; Amutenya, M. Investigating nitrate retention capacity, elementary and mineral composition of Kalahari sandy soils at Mashare farm in Namibia, Okavango river basin 2019 Scientific African 6 00193
Heaton, T.H.E. Sources of the nitrate in phreatic groundwater in the western Kalahari 1984 Journal of Hydrology 67 249-259
Stone, A.E.C.; Edmunds, W.M. Naturally-high nitrate in unsaturated zone sand dunes above the Stampriet Basin, Namibia 2014 Journal of Arid Environments 105 41-51
Vogel, J.C.; Talma, A.S.; Heaton, T.H.E. Gaseous nitrogen as evidence for denitrification in groundwater 1981 Journal of Hydrology 50 191-200
Wilson, G.B.; McNeill, G.W. Noble gas recharge temperatures and the excess air component 1997 Applied Geochemistry 12 747-762
Heaton, T.H.E.; Talma, A.S.; Vogel, J.C. Origin and history of nitrate in confined groundwater in the western Kalahari 1983 Journal of Hydrology 62 243-262
Illgen, M.; Ackermann, H. 2019 Urban Flood Prevention: Technical and Institutional Aspects from Chinese and German Perspective 173-193
Severi, A.; Masoudian, M.; Kordi, E.; Roettcher, K. Discharge coefficient of combined-free over-under flow on a cylindrical weir-gate 2015 ISH Journal of Hydraulic Engineering 21 42-52
de Jong, I.J.H.; Arif, S.S.; Gollapalli, P.K.R.; Neelam, P.; Nofal, E.R.; Reddy, K.Y.; Röttcher, K.; Zohrabi, N. Improving agricultural water productivity with a focus on rural transformation* 2021 Irrigation and Drainage 70 458-469