Home › Authors › Berger, Helmut Dr 👤 Berger, Helmut Dr 3 books Books by Berger, Helmut Dr Monograph of the Gonostomatidae and Kahliellidae (Ciliophora, Hypotricha) 2011 Monograph of the Amphisiellidae and Trachelostylidae (Ciliophora, Hypotricha) 2008 Soil ciliates (Protozoa, Cilio Soil ciliates (Protozoa, Ciliophora) from Namibia (southwest Africa) 2002