American hydroids: III. The Campanularidae and the Bonneviellidae
Nutting, C.C. (1915). American hydroids: III. The Campanularidae and the Bonneviellidae. Smithsonian Institution. United States National Museum. Special Bulletin. Government Printing Office: Washington D.C. 126, XXVII plates pp.
Part of: Smithsonian Institution. United States National Museum. Special Bulletin. Government Printing Office: Washington DC, more
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