Fenner, J. (1981). Diatoms in the Eocene and Oligocene sediments off NW-Africa. Their stratigraphic and paleogeographic occurrences. Doctoral dissertation. University of Kiel. Germany, 1-231
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Fenner, J.
1981
Diatoms in the Eocene and Oligocene sediments off NW-Africa. Their stratigraphic and paleogeographic occurrences. Doctoral dissertation