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PSM V19 D482 Diagram of sea urchin

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Summary

Fig. 7.—Diagram of Sea-Urchin. a, Anus; b, Stomach; c, Mouth; e, Heart, which by vascular rings encircles the alimentary canal at d and f.

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blood circulation popular science monthly illustrations volume 19 diagram scientific illustrations science science history popular science
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Date

1881
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Source

Wikimedia Commons
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Link

http://commons.wikimedia.org/
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Copyright info

public domain

label_outline Explore Blood Circulation, Popular Science Monthly Illustrations Volume 19, Scientific Illustrations

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blood circulation popular science monthly illustrations volume 19 diagram scientific illustrations science science history popular science