http://www.biologiezentrum.at/biowww/en/biblio/denisia.php
Wilhelm Foissner, Sabine Agatha, Helmut Berger (2002): Soil
Ciliates
(Protozoa, Ciliophora) from Namibia (Southwest Africa), with
Emphasis
on two Contrasting Environments, the Etosha Region and the
Namib
Desert. (2 Vols.) 1459 pp. 443 Abb.
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