Check-lists
* List of countries might not be complete
Links and literature
[1] Irikov A., Eröss Z. (2008): An Updated and Annotated Checklist of Bulgarian Terrestrial Gastropods (Mollusca: Gastropoda), Folia Malacologica, Vol. 16(4) [as Bulgarica urbanskii Nordsieck, 1973]
Data retrieved on: 22 February 2009
Irikov A., Eröss Z. (2008): An Updated and Annotated Checklist of Bulgarian Terrestrial Gastropods (Mollusca: Gastropoda), Folia Malacologica, Vol. 16(4) [as Bulgarica urbanskii Nordsieck, 1973]Data retrieved on: 22 February 2009