Ptychopatula orcula (Benson, 1850)
Literature
| Authors | Title |
Year of Publication |
|---|---|---|
| J.J. Vermeulen; A.J. Whitten | Guide to the land snails of Bali | 1998 |
| G.W.H. Davison | The terrestrial mollusca fauna of Temengor Forest Reserve, Hulu Perak, Malaysia. | 1995 |
| A.J. Berry | An introduction to the non-marine molluscs of Malaya | 1963 |
| W.S.Svan Benthe Jutting | Some notes on land and freshwater Mollusca of Malaya | 1960 |
| W.H. Benson | Characters of new species of Helix from India, Mauritius and the | 1850 |