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Author Title Year Publication Volume Pages
Rajfur, M.; Kłos, A.; Wacławek, M. Sorption properties of algae Spirogyra sp. and their use for determination of heavy metal ions concentrations in surface water 2010 Bioelectrochemistry 80 81-86
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
Wilson, G.B.; McNeill, G.W. Noble gas recharge temperatures and the excess air component 1997 Applied Geochemistry 12 747-762
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
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
Heaton, T.H.E. Sources of the nitrate in phreatic groundwater in the western Kalahari 1984 Journal of Hydrology 67 249-259
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
Schwiede, M.; Duijnisveld, W.H.M.; Böttcher, J. Investigation of processes leading to nitrate enrichment in soils in the Kalahari Region, Botswana 2005 Physics and Chemistry of the Earth, Parts A/B/C 30 712-716
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
Zhang, Y.; Liu, X.; Yuan, S.; Song, J.; Chen, W.; Dias, D. A two-dimensional experimental study of active progressive failure of deeply buried Qanat tunnels in sandy ground 2023 Soils and Foundations 63 101323