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Safe Construction and Installation of Escalators
International Committee for Lift RegulationsInternational Labour Office
其他書名
Recommendations Adopted ... on 6 June 1972
出版International Labour Office, 1976
ISBN92210118019789221011804
URLhttp://books.google.com.hk/books?id=gqslzQEACAAJ&hl=&source=gbs_api