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Put on cleaning
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Tinker Egyptian
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Industry sewage pipes
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Aquatherm Socket Fusion
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Learn to weld polyethylene pipes
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Explain the process of plumbing
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Orhh blacksmithing
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Members "not defective" practicing construction
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Household electricity - Issue and tools - Mahadharhalthanih
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Invention solves the problem of water
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Way to connect electrical outlets (Alabarryz)
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Household electricity - first lecture