Håkansson, H. (1990). A comparison of Cyclotella krammeri sp. nov. and C. schumannii Håkansson stat. nov. with similar species. Diatom Research, 5(2): 261-271
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Håkansson, H.
1990
A comparison of Cyclotella krammeri sp. nov. and C. schumannii Håkansson stat. nov. with similar species