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Roger D Hall: African Penguin
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Roger D Hall: Magellanic Penguin
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Roger D Hall: King Penguin
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Roger D Hall: Emperor Penguin
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Roger D Hall: Gentoo Penguin
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Roger D Hall: Southern Rockhopper Penguin
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Roger D Hall: Galapagos Penguin
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Roger D Hall: Chinstrap Penguin
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Roger D Hall: Penguins of the World