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ricerca di: The University Press of Kentucky - Libri recensiti: 1
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In breve: The Great Trigonometrical Survey of India was officially instituted in 1818. In their desire to extend the survey into the Tibetan plateau, then closed territory, the British authorities trained Indian natives in surveying techniques. It was their work beyond the northern frontiers of India which resulted in the charting of over one million square miles of virtually uncharted territory, often at great risk to themselves
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