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"Why do we see Crabs in the Quill?"(PDF). St Eustatius: National and Marine Parks and Botanical Gardens Newsletter: 5. 2009. Archived from the original(PDF) on 2012-02-24. Retrieved 2010-02-06.
"Why do we see Crabs in the Quill?"(PDF). St Eustatius: National and Marine Parks and Botanical Gardens Newsletter: 5. 2009. Archived from the original(PDF) on 2012-02-24. Retrieved 2010-02-06.