You are about to access our book library "Account of the Operations of the Great Trigonometrical Survey of India: General description of the principal triangulation of the North-East quadrilateral, including the simultaneous reduction and the details of the ... North-East longitudinal, the Budhon meridional, the Rangir meridional, the Amua meridional, the Karara meridional (and appendices) (1882) full version"
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