Nishikawa, T. (1984). Contributions to the japanese ascidian fauna 38. Notes on the morphology and systematic position of Placentella crystalloina Redikorzev from the North Pacific. Proc. Jap. Soc. syst. Zool. 29: 37-56.
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Nishikawa, T.
1984
Contributions to the japanese ascidian fauna 38. Notes on the morphology and systematic position of Placentella crystalloina Redikorzev from the North Pacific