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General Report on the Operations of the Great Trigonometrical Survey of India During -[1876/77].
India. Great Trigonometrical Survey
出版Printed at the Office of the superintendent G.T. Survey, M.J. O'Connor, 1878
URLhttp://books.google.com.hk/books?id=0W3nAAAAMAAJ&hl=&source=gbs_api
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