Pyatova, Marina, Ekaterina Ravkovskaya, Irina Khvorova, and Georgiy Lada. 2016. “Long-Term Dynamics of Species Composition and Numbers of Helminthes of the Marsh Frog <em>Pelophylax ridibundus</Em&gt; (Pallas, 1771) in the Conditions of Tambov Region”. Biological Communications, no. 3 (September), 126–130. https://doi.org/10.21638/11701/spbu03.2016.321.