Les livres de l'auteur francisco welter schultes

The book presents all European species of molluscs*, which are about 2090 snails and 53 mussels.

In several groups the species definition is controversial, others are currently in a state of taxonomic revision. So the number of species can only be approximated. Surprisingly many groups in Europe are relatively little studied.
[lire la quatrième du livre European non-marine molluscs]