TY - JOUR T1 - Descriptions of a new species of Opisthostoma from Borneo JF - Proceedings of the Malacological Society of London Y1 - 1904 A1 - E.A. Smith SP - 105 VL - 6 UR - http://www.biodiversitylibrary.org/item/52315#page/135/mode/1up ER - TY - JOUR T1 - Description of a new species of Opisthostoma from North Borneo JF - Proceedings of the Malacological Society of London Y1 - 1905 A1 - E.A. Smith SP - 105 VL - 6 UR - http://www.biodiversitylibrary.org/item/52315#135 ER - TY - JOUR T1 - Descriptions of three new species of Opisthostoma from Sarawak, North Borneo JF - Proceedings of the Malacological Society of London Y1 - 1905 A1 - E.A. Smith SP - 189 EP - 190 VL - 6 UR - http://biodiversitylibrary.org/item/52315#page/231/mode/1up ER - TY - JOUR T1 - New Malay land-shells JF - Proceedings of the Malacological Society of London Y1 - 1948 A1 - J.R. le B. Tomlin SP - 224 EP - 225 VL - 27 ER -