Ama-valve ahlukaniswa ngokushayela, ukusetshenziswa kanye nomsebenzi
Ama-valve ahlukaniswa ngokushayela, ukusetshenziswa nokusebenza kwe-valve yase-York, ikakhulukazi yakhiwe umzimba we-valve, izingxenye zokuvula nokuvala kanye nesembozo se-valve izingxenye ezintathu. Isihlalo se-valve emzimbeni we-valve, isiqu se-valve sishayela izingxenye ezivulayo nezivalayo ze-valve (di...
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