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Range Extension of the Ponto-Caspian polycheate Manayunkia caspica Annenkova, 1929 (Annelida: Fabriciidae) in the Danube River
(Sofia, Bulgaria: Institute of Biodiversity and Ecosystem Research — BAS, 2020)
The Spiny-cheek Crayfish Faxonius limosus (Rafinesque, 1817) (Decapoda: Cambaridae) Invades New Areas in Serbian Inland Waters
(Sofia : Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2020)