1. Ubucukuzi bwakoreshejwe 1 work Gukora isi: Gucukumbura birashobora gukoreshwa mugutezimbere isi, kuringaniza ubutaka, gucukura umuhanda, gusubira mu mwobo nindi mirimo.Imiterere yubwubatsi bwisi iragoye, kandi inyinshi murizo ni imirimo yo mu kirere, yibasiwe n’ikirere, hydrologiya, geologiya, kandi biragoye kumenya ...
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