Okuno, H. (1956). Electron-microscopic fine structures of fossil diatoms. Part 4. Transactions and Proceedings of the Palaeontological Society of Japan, new series, 21: 133-139, 2 pl.
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Okuno, H.
1956
Electron-microscopic fine structures of fossil diatoms. Part 4.
Transactions and Proceedings of the Palaeontological Society of Japan, new series