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Brushes, brush-holders, commutators and slip-rings for rotating machines. Terms and definitions
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Yttrium and its oxides. Method of determination of such impurities as oxides of praseodymium, neodymium, samarium, europium, terbium, dysprosium, holmium, erbium, thulium and ytterbium
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Rehabilitation (abilitation) of invalids (disabled childrens). Accounting and reporting documentation of rehabilitation (abilitation) facilities
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