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  1. Beitrag zur entwicklungsgeschichte der seeigellarven
    By: Krohn, August David,
    Publication info: Heidelberg :J. Groos,1849.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
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  2. Beiträge zur Entwickelungsgeschichte der Pteropoden und Heteropoden /
    By: Krohn, August David,
    Publication info: Leipzig :W. Engelmann,1860.
    Holding Institution: MBLWHOI Library
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