| Citation | Kwang, S.Y., M. Adb and K. Yahya, 2050 The population study of keyhole sand dollar Echinodiscus truncates (Echinoidea: Astriclypeidae) in the intertidal zone of Penang National Park, Malaysia. Centre for Marine and Coastal Studies. |
| Ref. | 108734 Kwang, S.Y., M. Adb and K. Yahya, 2050 |
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| Named Used as Valid | Echinodiscus bisperforatus |
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