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Additional Instrumental Instructions to Mr. Consul Petherick
Proceedings of the Royal Geographical Society of London
Vol. 5, No. 2 (1860 - 1861), pp. 96-97
Published by: Wiley on behalf of The Royal Geographical Society (with the Institute of British Geographers)
Stable URL: http://www.jstor.org/stable/1798845
Page Count: 2