Drawing of apertural view of the shell of <i>Pseudosuccinea columella</i>.
G. Oberholzer &amp; J. A. Van Eeden
CC BY 3.0
Oberholzer G. &amp; Van Eeden J. A. (1967). "The freshwater molluscs of the Kruger National Park". <i>Koedoe - African Protected Area Conservation and Science</i> <b>10</b>(1): 1-42. <a href="//doi.org/10.4102/koedoe.v10i1.762" class="extiw" title="doi:10.4102/koedoe.v10i1.762">doi:10.4102/koedoe.v10i1.762</a>, <a rel="nofollow" class="external text" href="http://www.koedoe.co.za/index.php/koedoe/article/view/762">PDF</a>. Fig. 19.