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An account of the measurement of an arc of the meridian between the parallels of 18°©℗♯°ß being a continuation of the grand meridional arc of India, as detailed by the late Lieut.-Col. Lambton in the volumes of the Asiatic Society of Calcutta
- "An account of the measurement of an arc of the meridian between the parallels of 18°©℗♯°ß being a continuation of the grand meridional arc of India, as detailed by the late Lieut.-Col. Lambton in the volumes of the Asiatic Society of Calcutta"@en