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Survey of India logo
Survey of India logo
William Lambton (1753 – 19 January 1823) started Great Trigonometrical Survey (1802–1852).
William Lambton (1753 – 19 January 1823) started Great Trigonometrical Survey (1802–1852).
Details of the top of iron pillar, Qutub Minar, Delhi
Details of the top of iron pillar, Qutub Minar, Delhi