Georgiev D. & Stoycheva S. (2011) A new spring-snail species (Mollusca: Gastropoda: Risooidea) from Stara Planina Mountain, Bulgaria. Buletin Shkencor, ser. Shkencat Natyrore [Universiteti i Shkodrës “Luigj Gurakuqi”] 61: 97-100.
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Georgiev, D.; Stoychevaountain, S. M.; Bulgaria iBuletinhkencor, S.; ser
2011
A new spring-snail species (Mollusca: Gastropoda: Risooidea) from Stara Planina
Shkencat Natyrore</i> [Universiteti i Shkodrës “Luigj Gurakuqi