TY - JOUR T1 - Notes on the non-marine molluscs of the island of Borneo 7. The genus Niahia gen. nov. JF - Basteria Y1 - 1996 A1 - J.J. Vermeulen SP - 67 EP - 69 VL - 60 ER - TY - JOUR T1 - Notes on the non-marine molluscs of the island of Borneo 8. The genus Arina additions to the genera Diplommatina and Opisthostoma JF - Basteria Y1 - 1996 A1 - J.J. Vermeulen SP - 87 EP - 138 VL - 60 ER -