TY - CONF T1 - Non-marine Mollusca of the limestone hills in Malaya T2 - Proceedings of the Centenary and Bicentenary Congress of Biology Y1 - 1960 A1 - van Benthem-Jutting, W.S.S. SP - 63–68 JF - Proceedings of the Centenary and Bicentenary Congress of Biology ER - TY - CONF T1 - The reproduction of the minute cyclophorid snail Opisthostoma (Plectostoma) retrovertens from a Malayan limestone hill T2 - Proceedings of the Zoological Society of London Y1 - 1964 A1 - Berry, AJ SP - 655–664 JF - Proceedings of the Zoological Society of London PB - Wiley Online Library VL - 142 ER -