paperfacets:
Haeckel plate 2
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Haeckel plate 18
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Haeckel plate 20
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Haeckel plate 38
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Haeckel plate 24
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Haeckel plate 49
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Haeckel plate 51
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Haeckel plate 58
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Haeckel plate 71
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Haeckel plate 79
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Haeckel plate 99