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

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The First Record of Helobdella nuda (Hirudinida, Glossiphoniidae) in Lake Baikal by 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 by 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) by Ye. Berezkina, K. V. Avdiuk, O. V. Gudzenko, M. A. Kharkhota, Yu. Utevsky

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