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Elements of Trigonometry

Lyman Morse KellsWillis Frederick KernJames R. BlandJoseph Barnet Orleans

其他書名	Plane and Spherical with Applications
出版	McGraw-Hill book Company, Incorporated, 1943
URL	http://books.google.com.hk/books?id=QA5PAQAAMAAJ&hl=&source=gbs_api