Determination of the Positions of Feaghmain and Haverfordwest, Longitude Stations on the Great European Arc of ParallelGreat Britain Ordnance Survey, Alexander Ross Clarke, H. James · First published 2018Open the Tome
Details of the pendulum operations by Captains J.P. Basevi, R. E., and W.J. Heaviside, R. E., and of their reduction Prepared under the directions of Major-General J. T. Walker ... Dehra DunJames Palladio Basevi, William James Heaviside, Alexander Ross Clarke, John Hershel, John Herschel · First published 1879Open the Tome
Determination of the positions of Feaghmain and HaverfordwestAlexander Ross Clarke · First published 1867Open the Tome
Comparisons of the standards of length of England France, Belgium Prussia, Russia, India, Australia made at the Ordnance Survey Office, SouthamptonAlexander Ross Clarke · First published 1866Open the Tome