70296144
9781018668789
Portlock, Joseph Ellison is the author of 'Memoir of the Life of Major-General Colby : R. E. , Ll. D. , F. R. S. L. & E. , F. R. A. S. , F. G. S. , M. R. I. A. , etc: Together with a Sketch of the Origin and Progress of the Ordnance Survey of Great Britain and Ireland', published 2022 under ISBN 9781018668789 and ISBN 1018668780.
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