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The Pendulograph, a Series of Bipendulum Writings of the Twenty Ratios of the Musical System ; Or Sound Seen in the Silence. By the Rev. John Andrew

John Andrew (Le Rév.)

出版	G. Bell, 1881
URL	http://books.google.com.hk/books?id=1ulJQwAACAAJ&hl=&source=gbs_api