Transitional Morphology in Hybrids of Hirudo verbana and H. orientalis (Clitellata, Hirudinida) von M. V. Kovalenko, Yu. Utevsky

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The First Record of Helobdella nuda (Hirudinida, Glossiphoniidae) in Lake Baikal von I. A. Kaygorodova, Yu. Utevsky

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First Record of the Boreal-Arctic Marine Leech Mysidobdella borealis (Hirudinida, Piscicolidae) from the Southern Bay of Biscay von Yu. Utevsky, J. C. Sorbe

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Bacterial enzymes associated with gastropod mollusc Nacella concinna from the water area of Argentine Islands (West Antarctica) von Ye. Berezkina, K. V. Avdiuk, O. V. Gudzenko, M. A. Kharkhota, Yu. Utevsky

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