[직수입양서]
Tables Showing the Approximate Magnetic Direction and Ordinary Rate, of the Tidal Streams in the Dover Straits: And from an Offing of from 3' to 20' O
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Paperback ]
[직수입양서]
Tables Showing the Approximate Magnetic Direction and Ordinary Rate (at Spring & Neaps) of the Tidal Streams in the Dover Straits, and From an Offing
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Hardcover ]