Witkowski, Andrzej.
Diatom taxa of unusual frustule structure belonging in the genus Fragilaria / Andrzej Witkowski, Horst Lange-Bertalot, Małgorzata Witak.
1995. -
Witkowski, Andrzej.
Diatom taxa of unusual frustule structure belonging in the genus Fragilaria / Andrzej Witkowski, Horst Lange-Bertalot, Małgorzata Witak.
1995. -