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Hagelstein, R. (1939). The Diatomaceae of Porto Rico and the Virgin Islands. Scientific Survey of Porto Rico and Virgin Islands, New York Academy of Sciences. 8(3): 313-450, pls 3-9.
Hagelstein, R. (1939). The Diatomaceae of Porto Rico and the Virgin Islands. Scientific Survey of Porto Rico and Virgin Islands, New York Academy of Sciences. 8(3): 313-450, pls 3-9.