Arifulova, I.I. and Chirikova, M.A. 2018. Morphological Variability of Larval Mouthparts of the Marsh Frog Pelophylax ridibundus (Pallas, 1771) (Anura, Ranidae) in Natural Populations of Southeastern Kazakhstan. KnE Life Sciences. 4, 3 (May 2018), 1–6. DOI:https://doi.org/10.18502/kls.v4i3.2095.