As it was: highlights of hydrographic history, from The Old Hydrographer's Column 'Hydro International' volumes 1-6
Ritchie, S. (Ed.) (2003). As it was: highlights of hydrographic history, from The Old Hydrographer's Column 'Hydro International' volumes 1-6. GITC: Lemmer. ISBN 90-806205-5-6. 118 pp.
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