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Google圖書搜尋
A Description of the Magnetic Water-gauge, for the Prevention of Steam-boiler Explosions, and for Indicating at All Times the Exact Place of the Water in the Boiler
Joseph P. Pirsson
其他書名
Invented and Patented by George Faber
出版
1849
URL
http://books.google.com.hk/books?id=mNaBtwAACAAJ&hl=&source=gbs_api