Datums for hydrographic surveys (and other related subjects) : admiralty tidal handbook no. 2. 

 -  Hydrographic department.  1975 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Tidal currents -- Maps -- Periodicals.
<br/><br/><label>Dewey Class. No.: </label>M 623.8949 D234 1995