Commissioners represented that it was frequently found very difficult to form a correct opinion as to the merits of existing or proposed works for drainage or water supply, on account of the absence of complete and systematic sets of levels for each Station. Tables of Heights in Sind, the Punjab, N.W. Provinces and Central India ... - Page 1 de India. Great Trigonometrical Survey - 1863 - 196 pages Affichage du livre entier -
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