I-Abstract Industrial Industrial and population emashumini ambalwa eminyaka adlule kube negalelo elibalulekile ekucekeleni phansi kwekhwalithi yamanzi. Amanye amagesi aphuma ezikhungweni zokuhlanza amanzi anobuthi futhi ayasha, adinga ukuhlonzwa, njenge-hydrogen sulphide, carbon dioxide, methane, kanye ne-ca...
Funda kabanzi