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Observations of magnetic declination made at Trevandrum and Agustia Malley in the observatories of his highness the Maharajah of Travancore, G.C.S.I. in the years 1852 to 1869 : being Trevandrum Magnetical Observations volume 1

John Allan Broun Published in 1874 in London by Henry S. King & Co.

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