An improved method of using annular leases for lighthouse illumination. With 2 plates.

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Príomhchruthaitheoir: Wigham, John R.
Citation:The Scientific proceedings of the Royal Dublin Society, Vol. VI, pp. 525-533, August, 1890
Formáid: Journal Article
Foilsithe / Cruthaithe: August, 1890
Ábhair: