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1999
UNESCO | Gruppo Editoriale Faenza Editrice
Southern Africa | Angola | Botswana | Lesotho | Malawi | Mozambique | Namibia | South Africa | Eswatini | Tanzania UR | Zambia | Zimbabwe
International Association of Engineering Geology and the Environment | Southern African Development Community | Oosterhuis, W.R.
56 p., illus., maps | Electronic | Microfiche | Paper | online resource | microfiche | volume
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