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Universal Ship Cancellation Society |
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Maritime Postmark Society -- Tom Hirschinger- |
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Den Maritime Frimerkeklub -- Jostein Simonsen (Danish) |
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Ships and Boats -- Mansoor Bolar |
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Ships and History on the Sea -- Paulo Pacheco |
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Peter's Ships & Philately Page |
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Ships on Stamps -- Erik Philippus |
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Great Britain Ship Stamps and Cancellations |
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Maritime Stamps -- Richard Boehmer and .Richard Konkolski |
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Navicula (German and English) |
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Nuclear Powered Ships on Stamps |
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Maritime Stamps & Mail -- Richard K |
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Philatelic Marine -- Jean-Louis Araignon |