Nkuko bizwi, ibikorwa byububiko ahanini bishingiye kububiko, gutwara, gutondeka, no gutwara. Hamwe nogutandukanya no kugorana mubikorwa bya logistique, ibinyabiziga bine byinzira zitatu, nkubuhanga bushya bwo kubika, byashimishije abantu kubera ...
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