Fraser C.M. (1911). The hydroids of the west coast of North America. With special reference to those of the Vancouver Island region. Bulletin from the Laboratories of Natural History of the State University of Iowa. 6: 3-91, pls 1-8.
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Fraser C.M.
1911
The hydroids of the west coast of North America. With special reference to those of the Vancouver Island region
Bulletin from the Laboratories of Natural History of the State University of Iowa