Literature references

1 literature reference for Ennea decussatula Preston, 1913:

Author: Bruggen, A.C. van & Van Goethem, J.L.
Year: 1997
Title: Dr William Adam's iconography of Central and West African Gulella species (Gastropoda Pulmonata: Streptaxidae). Part 1: nominal taxa
Source: Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, Biologie. 67: 5-30.