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file U (Stack)Grubb, Sir Howard
"A New Form of Position-Finder for Adaptation to Ship's Compasses"
offprint from Scientific Proceedings of the Royal Dublin Society, vol. X (N.S.) part II no. 15, February 1904, pp. 146-148. Read November 1903. Printed at the University Press Dublin. 1904.
[1973-118]
1904