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Google圖書搜尋
Final Report on Development of Improved Ventilation Technology for Non-coal Mines and Other Underground Excavations
J. R. Hoskins
Cedric Errol Gregory
出版
University of Idaho, Bureau of Mining Research
, 1970
URL
http://books.google.com.hk/books?id=juo0GwAACAAJ&hl=&source=gbs_api
