１７）玉軸受、ころ軸受製造業　第８表　生産実績規模、部品加工別外注利用状況および１０００個当り所要労働時間 １７）玉軸受、ころ軸受製造業　第８表　生産実績規模、部品加工別外注利用状況および１０００個当り所要労働時間

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