Chrońmy Przyrodę Ojczystą > 2009 > 65 > 1 > 69-72
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journal ISSN : | 0009-6172 |
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Buczyński P., Dąbkowski P, Zawal A., Jaskuła R., Tończyk G., Grabowski M., Buczyńska E., Lewandowski K., Janicki D., Cios S., Pietrzak L., Mrowiński P, Pakulicka J., Jabłońska A., Guzik M. 2008. Notes on the occurrence and threats of the medicinal leech (Hirudo medicinalis L.) (Annelida: Hirudinea) in Poland. Fragmenta Faunistica 51(2): w druku.
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Fitter R., Manuel R. 1986. Field Guide to the Freshwater Life of Britain and North-West Europe. Collins, London.
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Greenhalgh M., Ovenden D. 2007. Freshwater Life of Britain and Northern Europe. Collins, London.