Powers, P. B. A. (1936). Studies on the ciliates of sea urchins. A general survey occuring in Tortugas echinoids. Papers from the Tortugas Laboratory of the Carnegie Institution of Washington. 29: 205–326. With two plates.
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Powers, P. B. A.
1936
Studies on the ciliates of sea urchins. A general survey occuring in Tortugas echinoids.
Papers from the Tortugas Laboratory of the Carnegie Institution of Washington